Third Trimester Weekly Pregnancy Calendar: Your Baby and Your Development
A pregnancy is, on average, forty weeks. Each and every week is a new
and exciting experience. The following is a weekly pregnancy calendar to
give a general idea of what to expect in the third trimester for each
week of your pregnancy, as well as how your baby will be growing.
Month Seven, Week Twenty Eight:
How your baby is growing:
The lungs finish forming this week boosting the chance of survival
even more. If born today your baby may even survive without medical aid.
Your baby's tiny eyes are also now capable of opening after being fused
shut for so many weeks. Your baby likely now weighs around two and a
half pounds and may measure up to fifteen inches tall! The baby is
beginning to put the finishing touches on all parts of it's body. After
that it is only a matter of packing on the pounds. If your baby is a boy
his testes are also now descending.
How you may be changing:
Your third trimester has now officially begun. You may think weight
gain is all you have left to deal with, but many women actually
experience the worst symptoms of pregnancy in the last trimester. Your
growing size only makes things more uncomfortable. Now is a good time to
start thinking about a labor plan, but don't think it to be set in
stone.
Labor and delivery
can be full of surprises. It is always best to keep an open mind and be
prepared for anything and everything. Also if it is currently the hot
season in your area remember to stay out of the sun and avoid standing
for long periods of time. This can cause dizziness, which could cause
falling.
Month Eight, Week Twenty Nine:
How your baby is growing:
The brain makes a big leap this week and your baby can now regulate
it's own body temperature and achieve rhythmic breathing. Brain activity
increases, and some researchers even believe babies dream by week
twenty-nine. The bone marrow is complete and has taken over full charge
of red blood cell production. Your baby is now probably just under a
whopping three pounds and stands between fifteen and seventeen inches
tall. It can no longer twist and turn as space in the amniotic sack
continues to diminish. By now, other than hard kicks, you'll notice
movements becoming more subtle. You may even be able to tell if it is a
foot or hand hitting you.
How you may be changing:
Your
internal organs are now becoming very crowded. This can make for
difficulty breathing and may cause all variety of aches and pains. It
also means far more frequent bathroom breaks as the bladder becomes
squished. Hang in there, you're nearly finished. This week the body also
begins to release prolactin. Prolactin triggers the production of milk,
so if you haven't been leaking already, you may notice a bit of clear,
white fluid leaking out now, or in the weeks to come. This fluid, called
colostrum is an extra rich type of milk that is packed with antibodies
to protect your new baby.
Month Eight, Week Thirty:
How your baby is growing:
Brain development continues this week as well as plenty of body growth
to match. Your baby is now around three pounds and will likely still be
between fifteen and seventeen inches tall. After week thirty growth
varies even more widely from baby to baby. The average baby is twenty
inches long and weighs eight pounds at birth. Your baby is also becoming
far more self aware and can now differentiate light from dark. It can
also trace light with it's eyes. Some researchers believe using a flash
light outside the womb for baby to trace with its eyes will stimulate
brain development. You can try this in a dim room to see if you get a
reaction. Stimulating or not, interacting with your baby while it is
still inside you is fun.
How you may be changing:
Positioning is becoming important this week and your belly has now
reached about the size of a watermelon. Positioning is important in more
ways than one. Maintaining proper posture will help your breathing and
cut down on back aches. New positions will have to be found in the
bedroom as well. Continuing intercourse while pregnant will strengthen
your relationship with your baby's father by challenging your comfort
zone. You'll find sex is a whole new ball game with a beach ball between
you, and you may find a few
new positions you like. Just avoid those that place pressure on your abdomen.
Month Eight, Week Thirty One:
How your baby is growing:
Even if you're breathless your placenta is still providing plenty of
oxygen to your baby which is fattening up this week. Length growth
begins to slow down, but weight doubles in the final weeks. Your baby is
likely around three and a half pounds by now. It's eyes continue to
develop, and the irises are now capable of contracting and dilating.
Your baby's finger nails have now reached the ends of those tiny
fingers. Tiny fingers which are no longer translucent! Fat has now
become sufficient enough in your baby that it's skin will appear like a
normal newborn baby.
How you may be changing:
Your sleep
has been cut probably more than in half at this point between bathroom
breaks and sheer discomfort, but you can't bring yourself to sit still.
This is because the "nesting" instinct often takes hold by week thirty
one. The nesting instinct urges you to build a nest for your baby, so to
speak, ensuring everything is ready for him or her when they arrive. Be
careful not to over do it, and don't be ashamed to recruit help. You
may also experience pelvic pain at this point as what little space there
is between your hips stretches.
Month Eight, Week Thirty Two:
How your baby is growing:
The wrinkles are ironing out! This week your baby's skin begins to
become smooth as, well, a baby's bottom. Your baby may also already have
a full head of hair. Other than that baby is simply continuing to gain
weight this week, likely reaching the four pound mark. Taller babies may
already be pushing eighteen inches while others will still be back at
fifteen to sixteen. Babies born at this point have almost a one hundred
percent survival rate, though they may have issues suckling due to an
immature neuro-muscular maturity. You may want to begin keeping a kick
count of your baby's activity as a decrease can indicate approaching
labor.
How you may be changing:
Many women begin to experience
Braxton Hicks contractions
this week, if they haven't been having them previously. Braxton Hicks
contractions are harmless contractions of the abdominal muscles that
prepare the cervix for your approaching birth. Braxton Hicks
contractions will likely not hurt really and if they do the pain will go
away with time or a change of position. If your contractions don't go
away or become frequent and rhythmic, occurring five minutes or less
apart, call your prenatal health care provider. You should also call
your provider if you experience sudden swelling of the hands or feet.
All women experience swelling and bloating during pregnancy but a very
sudden onset can be a sign of preeclampsia which can cause labor
complications.
Month Nine, Week Thirty Three:
How your baby is growing:
Your baby now weighs a little over four pounds and will continue to
put on about eight ounces a week from now on. It may have reached the
height it will be born at by now, or it may even grow more. Many babies
"drop" this week or turn and allow their heads to slip into the pelvis
if they haven't done this already. If your baby has dropped you'll be
able to breathe easier and your baby's brain will get better oxygen for
it's final touches. Your baby is also beefing up it's immune system now
compliments of your blood.
How you may be changing:
Your
steady weight gain continues and you may begin to feel anxious or
impatient for your baby to be here. Remember to keep good communication
with your significant other, because they are likely feeling the same
way. You are in this together and it is almost over.You may feel
rhythmic twitches in your abdomen from now on. These are hiccups! Not
your hiccups, but your baby's. Many babies begin to practice using their
diaphragms around week thirty three which can lead to hiccups. It
really is a bizarre sensation you have to experience to describe.
Month Nine, Week Thirty Four:
How your baby is growing:
Your baby's brain is now making the final nerve connections and is
growing everyday, it is even learning from the womb! Your baby's brain
won't ever finish growing, however. His or her brain will triple in size
from birth to one year old, and will continue to grow for the rest of
their life. Speaking of growing, your baby is likely four and a half to
five pounds now and urinating almost a pint a day! Good thing amniotic
fluid refreshes every three hours. Just imagine how many diapers that
will be in just a few short weeks.
How you may be changing:
Early labor is a real possibility now. You'll want to obtain and
install a rear facing car seat in your vehicle in order to be ready to
take your new baby home. If you haven't finished your labor plan or
packed your hospital bag this is also a great time. Keep in mind, even
after delivering your baby you'll likely still look about three months
pregnant, so choose sizes appropriately. Expect to stay in the hospital
at least three days if this is your first baby. Don't forget amenities
like a tooth brush and tooth paste. As uncomfortable and anxious as you
may be, relaxing is the best thing for you and your baby this week.
Month Nine, Week Thirty Five:
How your baby is growing:
Most everything is complete from the vital organs to the toes nails
and your baby is ready for the grand finally now. Your baby is just
putting the finishing touches on it's immune and nervous system while
gaining more weight. Past this week little is left to do but put on fat.
Even the baby's hair is growing and it may be over an inch long by
birth. Your baby is now probably around five pounds and may be even
longer than twenty inches. Weight gain may slow now to about five ounces
a week rather than eight.
How you may be changing:
You're probably thinking you can't get much bigger, but you can and
will. If you're still employed you may want to consider beginning your
maternity leave as labor could occur at any time. If you do decide to
keep working avoid standing for long periods or time. If you work in an
office and sit all day be sure to get up and walk around every few hours
to reduce swelling and stiffness. If your significant other works now
is also a great time to arrange child, pet and home care while you're in
the hospital. These things shouldn't be left to the last minute. You'll
have enough to deal with while in the hospital.
Month Nine, Week Thirty Six:
How your baby is growing:
Your baby is now complete! Well, in the sense that pretty much all
that is left to do is gain weight. If you go into labor now you are
considered full term and the labor won't be slowed or stopped. Your baby
likely weighs between five and six pounds now and is twenty or more
inches long. Your prenatal care provider will feel your abdomen and
attempt to estimate it's exact size to be sure it won't pose labor
complications. If your baby begins to become too large to exit the womb
naturally you may be induced early.
How you may be changing:
Ninety-six percent of babies have dropped by week thirty-six, sitting
head down and ready to go. If you do go into labor this week don't feel
bad. A due date is just a general date of arrival. Some women go into
labor weeks before and some weeks after. If your prenatal health care
provider says everything is okay, it is. You'll also be tested for Group
Strep B this week to ensure you won't be infecting your baby on it's
way into the world. Check-ups will now be weekly.
Month Nine, Week Thirty Seven:
How your baby is growing:
Your baby now spends more time practicing breathing than kicking,
partially due to a lack of space. As your baby breathes in amniotic
fluid it is also swallowing some which will later become your baby's
first bowel movement or meconium.
Meconium
is a black, tar-like poop that will pass within the first twenty-four
hours of birth. If it doesn't this could indicate a bowel blockage.
Meconium is made up of amniotic fluid, dead skin cells and shedding
lanugo. That's right your baby is also shedding this week, and by birth
the majority of the fuzzy skin coating will be gone. Although, many
babies retain hair on their face and ears.,
How you may be changing:
This week you may lose the mucus plug you formed in your cervix.
Sometimes this plug is accompanied by blood and hence referred to as
"bloody show". Some women lose their mucus plug more slowly over time.
Either way once the mucus plug is lost it is a sign that labor is fast
approaching. You will also feel sort of loose this week as the hormone
relaxin causes joints relax, hence the name. Relaxin's purpose is to
allow the joints of the pelvis to more ease of passage for your baby.
You'll be thankful for this later!
Month Ten, Week Thirty Eight:
How your baby is growing:
Baby's growth redoubles the week and can become as much as an ounce a
day! Your weight gain however will likely slow down or stop altogether.
How is that possible? The baby is exchanging weight for amniotic fluid.
Some babies have to be induced early at this point because they have
consumed too much of their amniotic fluid. Not to worry though,
excluding complications that could occur with any labor, your baby has a
one hundred percent chance of survival and won't likely need any extra
medical care.
How you may be changing:
Some women
experience tingling, numbness or electric-like pains running down their
legs this week. This is caused by your baby's head putting pressure on
nerves as it settles lower into your pelvis. You may be feeling
extremely anxious to meet your baby at this point but avoid silly
induction practices such as
castor oil
or herbs. In the end these methods will only add to your discomfort.
Your baby will come when it's ready, and if it doesn't your prenatal
health care provider will provide a safe induction. Try and be patient.
Month Ten, Week Thirty Nine:
How your baby is growing:
Not much is happening now. Your baby has likely reached it's birth
weight and height by now. It is just continuing to practice breathing
and may gain small amounts of weight. Hair, nail, and brain growth will
continue. Researchers believe that sometime this week or in the next
couple of weeks your baby will actually decide to be born. Your baby
will simply send an electrical signal to the placenta which will trigger
the necessary hormones to begin your birth. The miracle of life really
is amazing! If researcher's are correct then your baby really does
choose to come out or stay in.
How you may be changing:
Even if you are tired try to keep busy this week. If you sit around just
waiting for your labor to occur it will seem to take forever, only
adding to your anxiety. Since you're wondering though, there are a few
hints that could indicate the baby will be here soon. Such as; loss of
mucus plug and/or bloody show, increase in nesting urge drive, weight
loss, appetite increase, and loose stools. None of these guarantee a
labor is imminent, but they may be an indicative.
Month Ten, Week Forty:
How your baby is growing:
What's going on with the majority of babies can be seen at this point,
because they've been born! While only four percent of labors take place
on their actual due date, many occur before the forty week mark. If
your baby hasn't been born it will continue to gain weight and lose it's
fuzz this week. You may have daily examinations at this point to ensure
that your babies amniotic fluid remains sufficient. Many babies end up
being induced if they surpass the fortieth week for health reasons.
How you may be changing:
You're either recovering from labor now or suffering through what
could be two more weeks of pregnancy. If you've had the baby you're
likely exhausted. Take advantage of this period of restfulness in your
baby and sleep. Plenty of people are going to want to see the little
bundle of joy, but don't feel bad in asking them to come another time.
If you haven't had the baby, hang in there! It has to come out
eventually one way or another. Try to stay positive and remain busy
unless your practitioner has indicated you must be on bed rest.
If you've had your baby congratulations, if not feel welcome to read the
final weeks of your pregnancy in my next article, post-term pregnancy
weekly calendar. If you have had your baby check out my profile for tons
of helpful information on baby care.