Write the next sentence in the following story.

How to recognize and treat an ectopic pregnancy
Note vaginal bleeding.
Abnormal vaginal bleeding is often one of the first symptoms of an ectopic pregnancy. This bleeding may be either heavier or lighter than what you normally experience during your menstrual period.

Available options: a). It may also be accompanied by severe pelvic or abdominal pain. If you experience vaginal bleeding when you know you are pregnant, or if the vaginal bleeding is accompanied by severe pain or lightheadedness, seek medical attention right away.. b). It is also accompanied by an increased semi-erect penis and painful urination. If you experience any of the following symptoms (although many people do get ectopic pregnancy symptoms), see your doctor : Menstrual bleeding begins about 4 hours after unprotected sex.. c). You may experience spotting, and if you have a lot of bleeding, blood may run down from your abdomen or back and it can stain your underwear. You may also develop a lead stain or infected rash on your breasts.. d). When you see blood or abnormal vaginal discharge, you are not ovulating. Unfortunately, the blood or vaginal discharge may be very light or have a dark aroma or smell... The answer should be
a).