What are the causes of abdominal pain in the second trimester?

　　Intestinal obstruction lacks typical symptoms, so once you feel stomach ache accompanied by vomiting, diarrhea , should seek medical treatment promptly. So, what pathological abdominal pain may expectant mothers experience in the second trimester of pregnancy?

　　One of the pathological abdominal pains - hiatal hernia and reflux esophagitis

　　There is a group of muscles between the thorax and abdomen of the human body, called the 'diaphragm'. There is a 'hatch' in the center of the diaphragm, through which the esophagus descends and is connected to the stomach. This hole is called the 'esophageal hiatus'.

　　In the second and third trimester of pregnancy, as the fetus grows older, the intra-abdominal pressure also increases. If the hiatus widens, the bottom of the stomach can be pushed into the chest through the widened esophageal hiatus, which is medically called a hiatal hernia. Because the upper mouth of the stomach is loose, gastric acid, gas, and food in the stomach can flow back into the esophagus or mouth. Reflux esophagitis occurs when gastric acid irritates the esophageal mucosa. This can cause abdominal pain in pregnant mothers. This happens occasionally.

　　Pathological abdominal pain 2 - late miscarriage

　　Late miscarriage mainly refers to abdominal pain and vaginal bleeding after 12 weeks of pregnancy. The process of late-term miscarriage is similar to childbirth, with periods of Uterus Contractive abdominal pain, followed by placental separation and bleeding, so the condition is more serious than early miscarriage, but late miscarriage is generally less common.

　　Pathological abdominal pain No. 3—ovarian cyst torsion

　　When women are pregnant, common ovarian tumors include corpus luteum cysts, teratocysts or other cysts. Only a few pregnant mothers will discover that their cysts are malignant tumors during pregnancy. In the early, late or early second trimester of pregnancy, cyst torsion is more likely to occur because the uterus and accessory organs enter the abdominal cavity. When torsion occurs, arterial blood can still enter the cyst, but venous blood cannot leave the cyst, causing the cyst to swell and even become necrotic, causing pregnant mothers to experience intermittent lower abdominal pain on one side, accompanied by nausea, vomiting, and feelings of collapse.

　　Pathological abdominal pain No. 4 - severe uterine torsion

　　female During pregnancy, if the uterus has uterine fibroids, congenital malformations, or ovarian tumors that cause the uterus to twist more than 90 degrees, it may cause acute abdominal pain.； In severe cases, it may cause shock to the pregnant mother or distress to the fetus. As for abdominal pain caused by mild uterine torsion, it can be improved by resting in bed, taking painkillers and changing the posture of the pregnant mother. If it is severe, it can only be corrected through laparotomy. If the fetus is mature, cesarean section can also be performed at the same time.

　　If the above four pathological abdominal pains are excluded, the abdominal pain experienced by expectant mothers in the second trimester may also be physiological abdominal pain. The reasons for this physiological abdominal pain may be as follows:

　　When she is four or five months pregnant, the pregnant mother’s belly suddenly gets bigger, and then skin There is a tight feeling, and you will feel a dull stretching pain in your abdomen after exercise. In some pregnant mothers, the enlargement of the uterus constantly stimulates the lower edge of the ribs, which can cause dull pain in the ribs or pain due to loosening and separation of the pubic symphysis. These conditions are normal physiological reactions after pregnancy and do not require special treatment. Pay attention to rest and sleep on the left side to relieve pain.

　　The activities of the fetus in the womb are called fetal movements, which can be divided into rotation, flipping, rolling, beating and high-frequency movement. When fetal movement first appears, you will feel a "wave", like fish swimming or bird wings dancing, gently and fleetingly. Later, when you move, you will become stronger and stronger. From the 18th week of pregnancy, the fully developed limbs of the fetus will begin to move actively. Usually, the mother can feel it at this time, and even see a bulge on the surface of the abdomen, sliding to the left, sometimes to the right, sometimes up, sometimes down.