Overbleeding since 16 days. Her breast.

She got periods on 13 June and still they are going on with heavy bleeding in which 4 pads get used up daily generally.when she was around 16 years old then also she got periods for one month for which she had to get admit in hospital also and doctor gave 21 days some medicine name but  that time she felt pain in her breast. After that she used to get periods not that regular but problem remained solved as she didn't get overbleeding again. But now last month she got periods and periods prolonged for more than 25 days,she consulted doctor who gave trapic mf medicine to take after taking that her bleeding get cured but now after approximately 12 days she got periods again on 13 June and they are going on till date with heavy bleeding .She again consulted a gynac in govt hospital she gave menorich syrup and suggested to do some blood tests and ultrasound of pelvic region in which no any problem got diagnosed then doctor gave trapic 600 and menorich syrup but still bleeding is same