your baby, week-by-week
Weeks 3 & 4: Poppyseed
Right now your little zygote is settling into your uterus...
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Week 5: Appleseed
Average size: .13 inches**
Baby's major organs and systems are now forming...
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Week 6: Sweet Pea
Average size: .25 inches
Blood is starting to circulate...
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Week 7: Blueberry
Average size: .51 inches
Baby's brain is growing fast...
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Week 8: Raspberry
Average size: .63 inches, .04 oz.
Those little arms and little legs are moving like crazy...
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Week 9: Green Olive
Average size: .9 inches, .07 oz.
A Doppler device might pick up a heartbeat this week...
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Week 10: Prune
Average size: 1.2 inches, .14 oz.
Baby's arm joints are working, and soon the legs will too...
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Week 11: Lime
Average size: 1.6 inches, .25 oz.
Fingers and toes are no longer webbed...
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Week 12: Plum
Average size: 2.1 inches, .49 oz.
Almost all vital systems are fully formed...
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Week 13: Peach
Average size: 2.9 inches, .81 oz.
Teeth and vocal cords are appearing...
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Week 14: Lemon
Average size: 3.4 inches, 1.5 oz.
Liver, kidney, and spleen are continuing to develop...
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Week 15: Navel Orange
Average size: 4 inches, 2.5 oz.
Legs are finally longer than arms...
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Week 16: Avocado
Average size: 4.6 inches, 3.5 oz.
Eyebrows, lashes, and hair are filling in...
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Week 17: Onion
Average size: 5.1 inches, 5.9 oz.
Skeleton is hardening, and fat is accumulating...
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Week 18: Sweet Potato
Average size: 5.6 inches, 6.7 oz.
Baby's moving like crazy -- feel anything yet?
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Week 19: Mango
Average size: 6.0 inches, 8.5 oz.
Vermix caseosa is coating baby's skin...
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Week 20: Banana
Average size: 6.5 inches, 10.6 oz.
Boy or girl, genitals are fully formed...
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Week 21: Pomegranate
Average size: 10.5 inches ***, 12.7 oz.
Taste buds are starting to work...
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Week 22: Papaya
Average size: 10.5 inches ***, 12.7 oz.
Baby's on a sleep cycle -- about 12 to 14 hours a day
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Week 23: Grapefruit
Average size: 10.5 inches ***, 12.7 oz.
Baby’s listening to your voice and heartbeat in there…
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Week 24: Canteloupe
Average size: 10.5 inches ***, 12.7 oz.
Nipples are sprouting, and face is fully formed!
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Week 25: Cauliflower
Average size: 13.6-14.8 inches, 1.5-2.2 lb.
Baby knows which way is up and which is down now…
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Week 26: Lettuce
Average size: 13.6-14.8 inches, 1.5-2.2 lb.
Eyes are forming and will soon start to open
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Week 27: Rutabaga
Average size: 13.6-14.8 inches, 1.5-2.2 lb.
Baby’s showing brain activity…
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Week 28: Eggplant
Average size: 13.6 -14.8 inches, 1.5-2.2 lb.
Immune system is preparing for the outside world...
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Week 29: Acorn Squash
Average size: 15.2-16.7 inches, 2.5-3.8 lb.
Baby’s hiccupping in there…
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Week 30: Cucumber
Average size: 15.2 -16.7 inches, 2.5-3.8 lb.
Baby’s strong enough to grasp a finger now.
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Week 31: Pineapple
Average size: 15.2-16.7 inches, 2.5-3.8 lb.
All five of the senses are working…
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Week 32: Squash
Average size: 15.2- 16.7 inches, 2.5-3.8 lb.
Sleeping and waking cycles are establishing...
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Week 33: Durian Fruit
Average size: 17.2-18.7 inches, 4.2-5.8 lb.
Bones are hardening…
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Week 34: Butternut Squash
Average size: 17.2-18.7 inches, 4.2-5.8 lb.
Baby can recognize and react to simple songs
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Week 35: Coconut
Average size: 17.2-18.7 inches, 4.2-5.8 lb.
Hearing is fully developed…
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Week 36: Honeydew
Average size: 17.2-18.7 inches, 4.2-5.8 lb.
Hearing is fully developed…
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Week 37: Winter melon
Average size: 18.9-20.9 inches, 6.2-9.2 lb.
Baby’s inhaling, exhaling, sucking, gripping and blinking.
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Week 38: Pumpkin
Average size: 18.9-20.9 inches, 6.2-9.2 lb.
Baby might have an inch or so of hair already.
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Week 39: Watermelon
Average size: 18.9-20.9 inches, 6.2-9.2 lb.
Baby’s flexing his limbs in there.
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Week 40: Jackfruit
Average size: 18.9-20.9 inches, 6.2-9.2 lb.
Full term! Baby's finally ready for the outside world...
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*Pregnancy weeks are counted from the last menstrual period.
**From week 5-20, measurements are taken from crown to rump.
***From week 21 on, measurements are taken from head to toe.
-- The Bump Editors
Oct 26, 2009
See More: 1st Trimester , 2nd Trimester , 3rd Trimester
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