I Need Help, Please

Sammi • ~sammi~
So, i'm 18 years old, I've had my period since i was 10/11 years old. They have eather been really heavy or regular. But it's been about 3 months past cycle. (There is NO possible chance that im pregnant because im lesbian) there has been a lot of stress. (deaths in the family/school/friends/drama) I had spoke to a female teacher yesterday because i had a lot of pain the day before and she said it could have been an ovarian cyst. Any ideas on how to take care of this/what it might be?