Level 1: 1. What are the causes of abdominal pain in early pregnancy? Abdominal pain in early pregnancy is a problem that many expectant mothers will encounter. It usually appears in the early stages of pregnancy. There are many reasons for abdominal pain: 1) Abdominal pain caused by uterine contractions. Uterine contractions are muscle contractions that are normal in early pregnancy. When dilation begins, it may cause mild contractions, resulting in mild abdominal pain. 2) Luteal insufficiency. Luteal insufficiency means that the ovaries are not able to produce enough