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Pregnancy Week by Week
Your baby grows from the size of a poppy seed to a watermelon over 40 incredible weeks. Follow along week by week to see what's happening with your baby's development and what you might be feeling.
Not sure how far along you are?
Use our calculator to find your due date and current week.
First Trimester
(Weeks 4–12)Week 4
Poppy Seed · 0.04 in · 0.001 oz
Week 5
Sesame Seed · 0.08 in · 0.004 oz
Week 6
Sweet Pea · 0.25 in · 0.007 oz
Week 7
Blueberry · 0.5 in · 0.03 oz
Week 8
Raspberry · 0.63 in · 0.04 oz
Week 9
Cherry · 0.9 in · 0.07 oz
Week 10
Strawberry · 1.2 in · 0.14 oz
Week 11
Fig · 1.6 in · 0.25 oz
Week 12
Lime · 2.1 in · 0.5 oz
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Second Trimester
(Weeks 13–27)Week 13
Peach · 2.9 in · 0.81 oz
Week 14
Lemon · 3.4 in · 1.5 oz
Week 15
Apple · 4 in · 2.5 oz
Week 16
Avocado · 4.6 in · 3.5 oz
Week 17
Pear · 5.1 in · 4.9 oz
Week 18
Sweet Potato · 5.6 in · 6.7 oz
Week 19
Mango · 6 in · 8.5 oz
Week 20
Banana · 10.1 in · 10.6 oz
Week 21
Carrot · 10.5 in · 12.7 oz
Week 22
Papaya · 10.9 in · 15.2 oz
Week 23
Grapefruit · 11.4 in · 17.6 oz
Week 24
Corn · 11.8 in · 21.2 oz
Week 25
Cauliflower · 13.6 in · 23.3 oz
Week 26
Zucchini · 14 in · 26.8 oz
Week 27
Rutabaga · 14.4 in · 30.9 oz
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Third Trimester
(Weeks 28–42)Week 28
Eggplant · 14.8 in · 35.4 oz
Week 29
Butternut Squash · 15.2 in · 40.6 oz
Week 30
Cabbage · 15.7 in · 46.6 oz
Week 31
Coconut · 16.2 in · 52.9 oz
Week 32
Jicama · 16.7 in · 60 oz
Week 33
Pineapple · 17.2 in · 67.7 oz
Week 34
Cantaloupe · 17.7 in · 75.8 oz
Week 35
Honeydew Melon · 18.2 in · 83.9 oz
Week 36
Romaine Lettuce · 18.7 in · 92.4 oz
Week 37
Swiss Chard · 19.1 in · 100.9 oz
Week 38
Leek · 19.6 in · 108.7 oz
Week 39
Mini Watermelon · 20 in · 116 oz
Week 40
Watermelon · 20.2 in · 122.1 oz
Week 41
Watermelon · 20.3 in · 127 oz
Week 42
Jackfruit · 20.4 in · 130.5 oz