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How Big Is Your Baby? Third Trimester

Your Baby's Size Week by Week

First Trimester | Second Trimester | Third Trimester

*Counting from the first day of your last menstrual period

27 Weeks Pregnant - Cauliflower

Size: 14.41 inches (36.6cm)  |   Weight: 1.93 pound (875 grams)
Your baby's retinas - or the light-catching lining of the back of the eye - is developing more every day... [more]
Your baby is the weight of a cauliflower at 27 weeks pregnant - Pregnancy Week By Week

28 Weeks Pregnant - Chinese Cabbage

Size: 14.80 inches (37.6 cm)  |   Weight: 2.22 pounds (1005 grams)
This week, your baby will see the light as the once-fused eyelids open to reveal a fully-formed eye... [more]
Your baby is the weight of a chinese cabbage at 28 weeks pregnant - Pregnancy Week By Week

29 Weeks Pregnant - Butternut Squash

Size: 15.20 inches (38.6 cm)  |   Weight: 2.54 pounds (1153 grams)
During this week, your baby is continuing to add additional fat under his thin skin... [more]
Your baby is the weight of a butternut squash at 29 weeks pregnant - Pregnancy Week By Week

30 Weeks Pregnant - Cabbage

Size: 15.71 inches (39.9 cm)  |   Weight: 2.91 pounds (1319 grams)
Your baby's brain is developing rapidly as it controls those important day-to-day activities... [more]
Your baby is the weight of a cabbage at 30 weeks pregnant - Pregnancy Week By Week

31 Weeks Pregnant - 4 Navel Oranges

Size: 16.18 inches (41.1cm)  |   Weight: 3.31 pounds (1502 grams)
Baby's hearing is now 100% completed and he or she can hear sounds and voices clearly... [more]
Your baby is the weight of 4 navel oranges at 31 weeks pregnant - Pregnancy Week By Week

32 Weeks Pregnant - Spaghetti Squash

Size: 16.69 inches (42.4 cm)  |   Weight: 3.75 pounds (1702 grams)
As fat stores continue to deposit, baby is taking on a more solid appearance... [more]
Your baby is the weight of a spaghetti squash at 32 weeks pregnant - Pregnancy Week By Week

33 Weeks Pregnant - Pineapple

Size: 17.20 inches (43.7 cm)  |   Weight: 4.23 pounds (1918 grams)
Calcification has allowed baby's bones to harden, and key minerals and nutrients are helping... [more]
Your baby is the weight of a pineapple at 33 weeks pregnant - Pregnancy Week By Week

34 Weeks Pregnant - Cantaloupe

Size: 17.72 inches (45 cm)  |   Weight: 4.73 pounds (2146 grams)
Most organs are matured at this week except for the lungs, which continue to produce surfactant... [more]
Your baby is the weight of a cataloupe at 34 weeks pregnant - Pregnancy Week By Week

35 Weeks Pregnant - Honeydew Melon

Size: 18.19 inches (46.2 cm)  |   Weight: 5.25 pounds (2383 grams)
Your baby's organs are complete, and his or her length is pretty much what it will be at birth... [more]
Your baby is the weight of a honeydew melon at 35 weeks pregnant - Pregnancy Week By Week

36 Weeks Pregnant - Casaba Melon

Size: 18.66 inches (47.4 cm)  |   Weight: 5.78 pounds (2622 grams)
Gaining weight at a rate of about an ounce per day, it won't take long for your baby to pack on some serious pounds... [more]
Your baby is the weight of a casaba melon at 36 weeks pregnant - Pregnancy Week By Week

37 Weeks Pregnant - Swiss Chard

Size: 19.13 inches (48.6 cm)  |   Weight: 6.30 pounds (2859 grams)
Practicing the movements that will be so essential after birth, your baby is breathing in amniotic fluid, sucking his thumb and moving... [more]
Your baby is the length of swiss chard at 37 weeks pregnant - Pregnancy Week By Week

38 Weeks Pregnant - Leek

Size: 19.61 inches (49.8 cm)  |   Weight: 6.80 pounds (3083 grams)
Because your baby has finalized just about everything else, this week he or she will begin shedding the lanugo... [more]
Your baby is the length of a leek at 38 weeks pregnant - Pregnancy Week By Week

39 Weeks Pregnant - Mini Watermelon

Size: 19.96 inches (50.7 cm)  |   Weight: 7.25 pounds (3288 grams)
These final weeks are all about weight gain as your baby adds an extra ½ pound every seven days... [more]
Your baby is the weight of a mini watermelon at 39 weeks pregnant - Pregnancy Week By Week

40 Weeks Pregnant - Small Pumpkin

Size: 20.16 inches (51.2 cm)  |   Weight: 7.63 pounds (3462 grams)
With skull bones that haven't fused, your baby is coming equipped with the skills to make it through labor... [more]
Your baby is the weight of a small pumpkin at 40 weeks pregnant - Pregnancy Week By Week
First Trimester | Second Trimester | Third Trimester

** Weeks 3 to 20 - Baby's size measurements are from crown to rump.
*** Weeks 21 to 40 - Baby's size measurements are from crown to heel.

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