First Trimester (Weeks 1-12)
During the first trimester, the fertilized egg implants in the uterus and begins to develop into an embryo. The mother may experience symptoms such as fatigue, nausea, and breast tenderness. The baby's major organs and systems begin to form, and the baby's heartbeat can usually be detected by week 8....
Read MoreSecond Trimester (Weeks 13-28)
By the second trimester, the mother's symptoms may improve, and she may begin to feel more energetic. The baby's movements become more frequent and noticeable, and the mother may begin to show a visible baby bump. The baby's sex can usually be determined by an ultrasound around week 20....
Read MoreThird Trimester (Weeks 29-40)
In the third trimester, the mother's belly grows larger as the baby continues to gain weight and prepare for birth. The mother may experience symptoms such as back pain, frequent urination, and Braxton Hicks contractions. The baby's lungs and other organs continue to mature, and the baby may settle into a head-down position in preparation for birth....
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