Fatigue and tiredness

Fatigue and tiredness are symptoms experienced by many women in the early stages of pregnancy. The cause of this fatigue has not been fully determined, but it is believed to be related to rising levels of the hormone progesterone. Fatigue is another symptom that may be experienced early, in the first weeks after conception.

Abdominal bloating

Some women may experience feelings of abdominal enlargement or bloating, but there is usually only a small amount of weight gain in the first trimester or pregnancy. In this early stage of pregnancy a weight gain of about one pound per month is typical. Sometimes women also experience mild abdominal cramping during the early weeks of pregnancy, which may be similar to the cramping that occurs prior to or during the menstrual period.
Frequent urination

A woman in the early stages of pregnancy may feel she has to urinate frequently, especially at nighttime, and she may leak urine with a cough, sneeze, or laugh. The increased desire to urinate may have both physical and hormonal causes. Once the embryo has implanted in the uterus, it begins to produce the hormone known as human chorionic gonadotrophin (hCG), which is believed to stimulate frequent urination. Another cause of frequent urination that develops later is the pressure exerted by the growing uterus on the bladder.