Diagnosis

A pelvic exam can help your doctor identify areas of pain, tenderness, or a mass in the fallopian tube or ovary. However, your doctor can't diagnose an ectopic pregnancy by examining you. You'll need blood tests and an ultrasound.

Pregnancy test

Your doctor will order the human chorionic gonadotropin (HCG) blood test to confirm that you're pregnant. Levels of this hormone increase during pregnancy. This blood test may be repeated every few days until ultrasound testing can confirm or rule out an ectopic pregnancy — usually about five to six weeks after conception.

Ultrasound

A transvaginal ultrasound allows your doctor to see the exact location of your pregnancy. For this test, a wandlike device is placed into your vagina. It uses sound waves to create images of your uterus, ovaries and fallopian tubes, and sends the pictures to a nearby monitor.

Abdominal ultrasound, in which an ultrasound wand is moved over your belly, may be used to confirm your pregnancy or evaluate for internal bleeding.

Other blood tests

A complete blood count will be done to check for anemia or other signs of blood loss. If you're diagnosed with an ectopic pregnancy, your doctor may also order tests to check your blood type in case you need a transfusion.