This is a false contraction during pregnancy, which is a normal physiological phenomenon. Generally, pregnant women will have contractions after 16 weeks, which can only be detected by human sensitivity. In fact, if a pregnant woman stands or sits in the same posture for a long time, she may have abdominal pain due to uterine contraction, and feel that her lower abdomen is very hard (that is, the symptoms of tight stomach), which is called "pseudo-contractions". Therefore, if Ma Bao feels that her stomach is hard and tight, it is likely to be pseudo-contractions ~ symptoms: the uterine contraction is irregular and there is no obvious regularity for several hours. There is no progress, and the intensity, duration and frequency have not increased. Most of them appear in front and below the abdomen. Never pain to slight discomfort, more like stress than pain. If you change your posture, walk, lie down, take a hot bath or shower, the reaction will be less intense. It feels like a hard ball in the womb.