Very early in pregnancy, ectopic pregnancies seem like normal pregnancies. A woman may have a missed period, breast tenderness, fatigue, and nausea. Symptoms of ectopic pregnancy include. 1  severe abdominal pain on one side of the body. 2  cramps and spotting. 3  vaginal bleeding. 4  shoulder pain. 5  nausea and vomiting. 6  fainting spells or dizziness.