I'm 32 years old, never taken bc or been pregnant in my life. My ...

I'm 32 years old, never taken bc or been pregnant in my life. My gyn recommended loestrin24 for my CONSTANT pelvic pain and very heavy, crampy, painful 7-8 days periods. I started taking it, i had some spotting during the first set of pills and some heavier bleeding on the last four pills of my pack. When i started the second set of pills my pelvic pain grown and i had an ultrasound showing a 2cm cyst and also a mildly fibroid uterus.The gyn said just stick to the pill and once it starts kicking in, i will feel a lot better. Well i'm not. I started and extremely heavy bleeding on the 16th day of my second set of pills, 4 days went by and still bleeding, crampy. I started reading this board cause i'm on the edge to finish taking this pill.