An ectopic pregnancy occurs when a fertilized egg grows outside of the uterus. Almost all ectopic pregnancies—more than 90%—occur in a fallopian tube. As the pregnancy grows, it can cause the tube to burst (rupture). A rupture can cause major internal bleeding. This can be a life-threatening emergency that needs immediate surgery.
If you do not have the symptoms of a fallopian tube rupture but another health care professional suspects you may have ectopic pregnancy, we may:
Perform a pelvic exam
Perform an ultrasound exam to see where the pregnancy is developing
Test your blood for a pregnancy hormone called human chorionic gonadotropin (hCG)
At first, an ectopic pregnancy may feel like a typical pregnancy with some of the same signs, such as a missed menstrual period, tender breasts, or an upset stomach.
Other signs may include:
Abnormal vaginal bleeding
Low back pain
Mild pain in the abdomen or pelvis
Mild cramping on one side of the pelvis
At this stage, it may be hard to know if you are experiencing a typical pregnancy or an ectopic pregnancy. Abnormal bleeding and pelvic pain should be reported to your obstetrician–gynecologist (ob-gyn) or other health care professional.
As an ectopic pregnancy grows, more serious symptoms may develop, especially if a fallopian tube ruptures. Symptoms may include the following:
Sudden, severe pain in the abdomen or pelvis
Shoulder painWeakness, dizziness, or fainting
A ruptured fallopian tube can cause life-threatening internal bleeding.
If you have sudden, severe pain; shoulder pain; or weakness, you should go to an emergency room.
An ectopic pregnancy cannot move or be moved to the uterus, so it always requires treatment. There are two methods used to treat an ectopic pregnancy:
1) Medication
2) Surgery
Several weeks of follow-up are required with each treatment.
The most common drug used to treat ectopic pregnancy is methotrexate. This drug stops cells from growing, which ends the pregnancy. The pregnancy then is absorbed by the body over 4–6 weeks. This does not require the removal of the fallopian tube.
If the ectopic pregnancy has ruptured a tube, emergency surgery is needed. Sometimes surgery is needed even if the fallopian tube has not ruptured. In these cases, the ectopic pregnancy can be removed from the tube, or the entire tube with the pregnancy can be removed.
Once you have had an ectopic pregnancy, you are at higher risk of having another one. During future pregnancies, be alert for signs and symptoms of ectopic pregnancy until your ob-gyn or other health care professional confirms the next pregnancy is growing in the right place.