I'm A 23 Year Old Female Mildly Over Wheight With

I'm a 23 year old female mildly over wheight with mild pcos, I've had my people for 7 weeks now are really staring to feel the effects of losing so much blood.. it's been a heavy flow for about 2 weeks now, I do not want to be put on birth control so I've been avoid the gynecologist. What should I do please help?!