The 19 weeks of pregnancy is the middle stage of pregnancy, when the pregnant woman’s belly feels hard to the touch because the uterus becomes bigger and the uterine wall is tense. In addition, as the uterus becomes bigger, the ligaments around the uterus are stretched and tensed, especially the round ligaments in front of the uterus are stretched and tensed, the pregnant women will obviously feel the hardness of the stomach, which is a normal physiological phenomenon and does not require special treatment. Some pregnant women can also experience fetal movement and uterine contractions in the middle of pregnancy. These pseudo contractions can also lead to temporary hardening of the stomach, which is a physiological phenomenon and does not require special treatment. However, if the abdomen becomes hard and the pain is severe and lasts for a long time without relief, you should go to the hospital for examination and diagnosis in time and treat the symptoms.