Hey there. Check out this website: http://www.ectopicpregnancy.com/facts.htm
It also says this on prochoice.org:
Ectopic pregnancy is commonly diagnosed when a woman has a positive pregnancy test but an ultrasound doesn't show a pregnancy in the uterus when it should be visible. A health care provider might also suspect an ectopic pregnancy based on a pelvic exam or symptoms the woman is having, such as one-sided pain.
Ectopic pregnancy is a medical condition which must be treated by a medical professional. Without treatment, the fallopian tube may rupture, which can result in serious injury or death. The usual treatment for an ectopic pregnancy that is detected early is methotrexate. It is not possible to carry an ectopic pregnancy to term.
Also try going to that website I listed. It may answer your question