The third trimester begins in week 28 of pregnancy and lasts until you give birth, which may be around week 40 of pregnancy. Fetal development continues during the third trimester. Your baby will open his or her eyes, gain more weight, and prepare for delivery.
Your belly is getting bigger by the week and this added size (possibly combined with trouble sleeping and Braxton-Hicks contractions), may be causing you some discomfort. Your baby continues to put on weight and his organs will finish maturing during the third trimester.
About video: An animation depicting the development progress of a fetus by the end of the third trimester. Special details include hair growth, eye development, bodily movement and brain growth.
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