I was put on the implanon birth control in the last week of august. I had my period after that and in September . The doctor said my period would stop for 5 to 6 months. Me and my boyfriend had unprotected sex in the last week of September. I didn't have my period in October and it is now November and my stomach is bigger. I eat a ton of food now, I throw up occasionally, I have cramp like pains in my stomach, and my boobs haven't gotten any bigger but they ach like no other. I went to my gynecologist today and she said my pregnancy test was negative they also did bloodwork and I'm going in for an ultrasound tomorrow because my gynecologist thinks I have an ovarian cyst. Please help ! My period are usually heavy and normal . After I had unprotected sex it just stopped and even my gynecologist said it was abnormal for that to happen