Please help

I have not had a period in 6 months. The past 30 days l have been experiencing brown clots/spotting constantly. I am losing weight drastically( 15 lb in 2 weeks) I am 6 feet tall and now 135 lb. l am anemic but other bloodwork/stool samples were normal. I had a transvaginal ultrasound last week which was normal other than “multiple small follicles on bilateral ovaries”. She said it is most likely consistent with pcos. However she said this should not cause me pain or abnormal bleeding as they are so small. What else could this be from. Which other tests can l ask her to run? I’m in pain and bleeding constantly. She offered birth control but l am hesitant.