Second trimester is a time period extending from 13th to the 27th week of gestation. During the second trimester, the fetus grows in size and weight. It is during this period that mother first experiences fetal movement.
Pain in lower abdomen during the second and third trimester is often caused due to stretching of ligaments (A tough fibrous tissue connecting bones or cartilages or supporting muscles organ). It happens when the ligaments that support your uterus in your pelvis stretch and thicken to accommodate the growing size of fetus. You may feel this type of pain in one or both sides of your lower abdomen or deep in your groin. You may feel a sharp ache in abdomen when you suddenly change your position on the bed or get out of bathtub. Or you may feel mild pain while walking or doing some other physical activity. Although this kind of pain is not harmful to you or your developing fetus, but severe abdominal pain or cramps could be a sign of a complication.
If you had an abdominal surgery, especially on the tubes and ovaries, you may have pain from pulling or stretching of adhesions (Adhesions are fibrous bands of tissues that are formed between tissues and organs, often as a result of injury during surgery). The increasing size of womb can cause these bands of tissues to stretch or even to be pulled apart, which may be painful.
Apart from this, many other conditions can also cause abdominal pain. Some of the most common causes of abdominal pain are stomach virus, food poisoning, appendicitis, kidney stones, gallbladder disease, and bowel construction.
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