Some pain in the belly is normal during pregnancy. Severe cramping or pain never is. ... Implantation. Many women have low, period-like pain or cramps for a day or so early in pregnancy ...
Rarely, early cramping and lower abdominal pain can signal an ectopic (or tubal) pregnancy. This means the fertilized egg has been implanted in the Fallopian tubes or elsewhere outside the uterus.
Early Pregnancy symptoms and possible non-pregnancy causes for the symptoms are discussed. ... Some women will experience spotting as well as some cramping. Other Explanations: ...