There are many reasons for the pain in the small abdomen, which may be a symptom of early pregnancy or a manifestation of ectopic pregnancy, pelvic infection, acute appendicitis and other diseases, and it is not possible to confirm whether you are pregnant by virtue of this symptom. After pregnancy, menstruation will first be delayed. Due to the congestion of the uterus and pelvis and the rich blood circulation in the pelvis, some pregnant women may experience cramping pain in the abdomen or lumbago, and some may experience an increase in vaginal discharge. This pain is mild and tolerable and can be improved by rest. If the cramping pain is significant or accompanied by vaginal bleeding, it may be a preterm miscarriage and needs to be treated with birth control. The easiest way to confirm pregnancy is to use an early pregnancy test, if there are two bars, it indicates pregnancy. You can also go to the hospital again to check the blood hCG or ultrasound to rule out ectopic pregnancy and determine the embryo development.