endometriosis
"I took Provera pills daily to stop my periods to kill the monthly pain. I chose pills over the shot so I could have control of deciding when/if I wanted to stop.  I took the pills for 6 months.  The first month I had lots of breakthrough bleeding - basically I was slowly bleeding for a few weeks.  After that I had no period, no spotting, no cramps - that part was FANTASTIC!  However, for me the side effects were severe and unlivable.  I had insomnia (waking in the night) every night.  I had night sweats every night.  I gained a little weight.  I had extreme vaginal dryness/painful intercourse which was a first ever for me.  My sex drive was non-existent and my acne and facial hair (PCOS) got much worse."