It could be another cyst. I have one but it has never given me any problems, but one of my old co workers had a cyst that came back twice and ruptured twice. It could be close to your ovulation time and some women will cramp during it, the month I got pregnant I had some bad cramping after ovulation time. I thought my period was coming early it hurt so bad, but the cramps felt different then when I have my period. Anyways, if they are really bad I would see your doctor in case it's a cyst.