Hi, not sure if I'll be of any help but I had a cyst on my ovary that was dissolved by one round of bcp. Now, I haven't had a normal period since and that was in Dec. 91. I was diagnosed this week with PCOS-polycystic ovarian syndrome which is lots of little cycts on your ovaries. It stops your periods or makes them very irregular. You usually don't ovulate. Most people take medication to ease the symptoms and 80% are overweight so they are encouraged to lose weight. If you do not want to get pg, bcp are usually the treatment but once you go off, the symptoms come back. It's my understanding that mini pill isn't strong enough to take care of this but I could be wrong. I'd do a bit of research online and if this sounds like what you have, go to your dr and request that he test for it. Then if you do have it, he can tell you how best to treat it. HTH Good luck to you.