Under normal circumstances after pregnancy, especially in the middle and late stages of pregnancy, due to the expansion of the uterus will be pressed to the pelvic cavity and the lower vena cava, which will lead to perianal varicose veins, so there will be a feeling of swelling in the anus, and even hemorrhoids and aggravated hemorrhoids, these are relatively common phenomena, the symptom will be relieved after delivery. It is not excluded that the hormone level changes after pregnancy, pelvic blood circulation accelerated, perianal blood increased, the symptoms of anal distension and discomfort. If the discomfort is obvious, you need to go to the hospital to check the specific situation and exclude the phenomenon caused by disease. During pregnancy, you also need to pay attention to do a good job on time, keep bowel movement, eat more fiber-rich vegetables, fruits, try not to eat spicy and stimulating food, avoid prolonged sedentary, postpartum bloating gradually reduce, the problem is not big.