The pregnant Body

A woman's body undergoes a variety of changes to prepare for the growth, nourishment, and

First Semester

An early sign of

Second Trimester

Increasing abdominal girth and pressure from the growing uterus can lead to constipation. Normal intermittent uterine contractions, called Braxton-Hicks contractions, may occur. The mother may experience lightheadedness and may even faint due to the effects of the hormones on the blood vessels and the amount of

Third Trimester

The last weeks of pregnancy become increasingly uncomfortable. Headaches, hemorrhoids, varicose vein, and swelling of the legs may occur. Shortness of breath is common due to the enlarged uterus, which prevents full expansion of the

Prenatal Care

Women who receive prenatal care have fewer complications of pregnancy and birth and have healthier babies. Also the earlier and more consistently the care is received, the better the outcome.

The average biological length of human gestation from conception to delivery, is 266 days. Due to the difficulty in assessing the exact date of conception, however, the clinical length of pregnancy is considered to be 280 days, or 40 weeks, calculated from the last normal menstrual period before the cessation of menses, or menstrual flow. This calculation assumes that ovulation occurs 14 days after the last menstrual period. Human gestation a further divided into trimesters, each of which lasts slightly more than 13 weeks.

Fetal Development

After the ovum, or egg, is fertilized by a sperm, the fertilized ovum becomes implanted in the uterus.

First Trimester

Most fetal

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AIDS final phase:

• Body weight down swiftly.
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