Ectopic pregnancy
A physician can do an exam of the pelvis to test for sensitivity and pain, to figure out if a woman has an ectopic pregnancy. There are also blood tests for the pregnancy hormone hCG. In a normal pregnancy, the hGC levels double every day.  Low levels are evidence of a problem, like an ectopic pregnancy. An ultrasound can also be used to see if the embryo is implanted in the uterus or not.