A lot happens in your pregnancy week by week! Learn about your baby's development and your body changes at each stage of pregnancy. Get customized pregnancy updates via email including tips for each week of your pregnancy when you sign up with babyMed!

First Trimester

  • menstrual period and cycle
    Week 1

    1 Week Pregnant

    Technically, it's week 1 of your pregnancy, but you still have 2 weeks until fertilization/ovulation.
  • 2 weeks pregnant
    Week 2

    2 Weeks Pregnant

    It is at the end of week 2 when ovulation and fertilization typically take place.
  • pregnancy week 3
    Week 3

    3 Weeks Pregnant

    During the 3rd pregnancy week, the fertilized egg travels trough the fallopian tube.
  • week 4 pregnancy
    Week 4

    4 Weeks Pregnant

    You will likely be expecting your period at the end of this week, but it won't happen if you are pregnant!
  • week 5
    Week 5

    5 Weeks Pregnant

    By week 5, baby is moving along quickly in the growth process and changes are starting to happen.
  • 6 Weeks Pregnant
    Week 6

    6 Weeks Pregnant

    The heart has now started beating and can often be seen early in the 6th week by transvaginal ultrasound.
  • pregnancy fetus week 7
    Week 7

    7 Weeks Pregnant

    In the 7th week, your baby is still very small, but many of the crucial organs are developing rapidly.
  • pregnancy fetus week 8
    Week 8

    8 Weeks Pregnant

    In week 8, you are more than halfway through your first trimester and baby continues to grow rapidly.
  • pregnancy fetus week 9
    Week 9

    9 Weeks Pregnant

    Cartilage develops, bones grow, and baby forms the skeleton that s/he will use to stand, walk and run.
  • pregnancy fetus week 10
    Week 10

    10 Weeks Pregnant

    Thanks to the ability of the human body to adapt, morning sickness should be easing off by week 10.
  • pregnancy fetus week 11
    Week 11

    11 Weeks Pregnant

    Your baby is now officially called a fetus, and the most crucial development phases are concluding.
  • pregnancy fetus week 12
    Week 12

    12 Weeks Pregnant

    Your uterus makes a move upward this week, which (thankfully!) relieves some of the pressure on the bladder.
More First Trimester Content

Second Trimester

  • pregnancy fetus week 13
    Week 13

    13 Weeks Pregnant

    The alien look of an early fetus on ultrasound disappears. Eyes move closer together and ears shift.
  • pregnancy fetus1 week 14
    Week 14

    14 Weeks Pregnant

    Doppler is commonly used around this time in the first trimester to hear your baby’s heartbeat.
  • pregnancy fetus week 15
    Week 15

    15 Weeks Pregnant

    By the 15th week of pregnancy, some parents are itching to find out the sex of the baby.
  • pregnancy fetus week 16
    Week 16

    16 Weeks Pregnant

    By the start of the 4th month, you may start noticing movements that feel like little flutters.
  • pregnancy week 17
    Week 17

    17 Weeks Pregnant

    The uterus is growing and your bump is likely visible. You may feel better than you have in a long time.
  • pregnancy fetus week 18
    Week 18

    18 Weeks Pregnant

    All the changes in the womb are starting to show. Your baby looks like a human and weighs up to 8 ounces.
  • pregnancy fetus week 19
    Week 19

    19 Weeks Pregnant

    Lanugo has already been growing on your baby’s skin. Now, vernix caseosa starts to develop.
  • pregnancy fetus week 20 ultrasound
    Week 20

    20 Weeks Pregnant

    The 20th week marks the halfway point! Fetal growth continues to add length and weight.
  • pregnancy fetus week 21
    Week 21

    21 Weeks Pregnant

    Baby continues to grow, but more attention is paid to internal organs than weight gain.
  • pregnant woman week 22
    Week 22

    22 Weeks Pregnant

    An interesting thing happens: you may start to feel better about your body and self-confidence soars.
  • pregnancy fetus week 23
    Week 23

    23 Weeks Pregnant

    This week marks a huge milestone: the fetus could survive if an early birth is required.
  • pregnancy fetus week 24
    Week 24

    24 Weeks Pregnant

    There is no hiding the pregnancy now as your tummy is growing by leaps and bounds.
  • pregnancy fetus week 25
    Week 25

    25 Weeks Pregnant

    Your abdomen is now about the size of a soccer ball which may be causing aches and pains.
  • pregnancy fetus week 26
    Week 26

    26 Weeks Pregnant

    The fetus continues to grow rapidly, weighing about two pounds and measuring nine inches or more.
More Second Trimester Content

Third Trimester

  • pregnancy fetus week 27
    Week 27

    27 Weeks Pregnant

    You've reached another huge landmark in pregnancy: the last week of the second trimester!
  • pregnant woman week 28
    Week 28

    28 Weeks Pregnant

    Welcome to your 3rd trimester! Your baby has a 90% chance of survival if born this week.
  • pregnancy fetus 29 weeks
    Week 29

    29 Weeks Pregnant

    The fetus is finally starting to look like a baby: the head and body are proportionate and weight gain is rapid.
  • pregnancy fetus 30 weeks
    Week 30

    30 Weeks Pregnant

    Your baby's bones have developed and bone marrow has started producing red blood cells.
  • pregnancy fetus 31 weeks
    Week 31

    31 Weeks Pregnant

    All necessary body functions are working perfectly. Lung development and weight gain are now the focus.
  • pregnant woman week 32
    Week 32

    32 Weeks Pregnant

    By the 32nd week, all five senses are in full working order. Your baby can see, taste, smell, feel and hear.
  • pregnancy fetus 33 weeks
    Week 33

    33 Weeks Pregnant

    Fetal brain development is rapid and the size of the head is growing to hold new brain tissue.
  • pregnancy fetus 34 weeks
    Week 34

    34 Weeks Pregnant

    Edema is normal during pregnancy, but pitting that lasts over a few seconds can signal preeclampsia.
  • pregnancy fetus 35 weeks
    Week 35

    35 Weeks Pregnant

    There is very little room left in the uterus now, so when your baby moves, you will feel it!
  • pregnant woman week 36
    Week 36

    36 Weeks Pregnant

    Four weeks to go until the due date now! The body is making some rapid changes.
  • pregnancy fetus week 37
    Week 37

    37 Weeks Pregnant

    The fetus weighs around 6½ pounds and practices breathing during every waking moment.
  • pregnant woman 38 weeks
    Week 38

    38 Weeks Pregnant

    Hormones are increasing, the cervix is ripening and the baby is shifting lower and lower in the uterus.
  • pregnancy newborn baby 39 weeks
    Week 39

    39 Weeks Pregnant

    As the final days of pregnancy become a reality, you may be feeling off balance and clumsy.
  • pregnancy newborn 40 weeks
    Week 40

    40 Weeks Pregnant

    Your belly is stretched beyond the imagination and you may have forgotten what your feet look like.
  • pregnancy baby 41 weeks
    Week 41

    41 Weeks Pregnant

    For the baby, week 41 is nothing more than an extended vacation but you may be getting antsy.
  • pregnancy 42 weeks baby
    Week 42

    42 Weeks Pregnant

    If natural induction techniques have not worked, doctors will commonly admit you to the hospital.
More Third Trimester Content

Check out our Pregnancy Guides!

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Pregnancy
fetal development