Talk to Gynecologist on Having Problem In Periods

I am facing this issue from last 2 years. I consult a doctor she suggest me medicine whenever i left medicine again i faced the same prob. Problem is ( periods mai thk sa bleeding ni hoti start me thn normal ci bleeding thn bleeding stop ni hoti periods ka silsala 20 days tk chalta rehta hau is sa back or legs mai pain hoti hai few months ago mujhy 3 months tak bleeding rhe periods ki ab facd or legs pr bal increase ho rhy hain) Doctor prescribed the medicine " cypodiol / Diau 35. I have no other tension rather thn this in my life. Every one said to me this prob leads you towards the problems in prgnancy. Kindly suggest me any doctor i want to visit Personaly