amenorrhea
"My doctor is giving me this to try and get my period under control. I'm 23 and since I was 16 my periods have been very irregular. I have a period once every 5 or 6 months. This is my second time taking this medicine. The first time was in December 2011 (6 months ago) and I started my period on the 10th day. I bled for 5 days, it started out light then became EXTREMELY heavy, I was going through 6 or 7 tampons a day.

After that, I had one more period that lasted only one day and was very light. So the doctor told me to try this again. Today is day 9 and have been extremely nauseous since about day 4. No period yet, but there is some excess discharge."