After pregnancy, it is normal to experience a slight cramping pain in the small abdomen. After pregnancy, the fetus will increase in size and the uterus will also increase in size, which will compress the inferior vena cava and obstruct the blood flow, resulting in a slight pain in the small abdomen. However, if the pain in the small abdomen is more obvious, and the pain is accompanied by the phenomenon of hardening of the stomach, it is not normal, there is a possibility of miscarriage or premature birth, or it may be a false contraction, which needs to be observed and distinguished. If it is a pseudo contraction, the pain will not be regular, often occurring at night and disappearing in the morning, and the symptoms can be relieved by gently massaging the abdomen. During this period, you should also pay attention to the change of fetal heartbeat. If the fetus and fetal heartbeat are developing normally, no special treatment is usually needed.