should i continue medicine?

hi!
I would like to share my problem with you.Since the last three years i am having a peculiar problem.I used to have fresh bleeding usually 15 days after my periods.This bleeding would happen after intercouse or when using an indian toilet.my gyno said I had a polyp and it was removed.But my bleeding problem still existed.I was diagonised with pcos.But the actual cause of bleeding remained unknown.i was put on harmonal pills.As soon as I stopped the dose the problem came back.My gyno suggested i go for TB test.I had tb gamma intraferon test.My gyno reffered me to a medicne Dr. and I was put on TB medicines.Recently on a visit to Chennai I contacted a tb specialist.He said that this test does not show that a person is suffering from active tb.In fact 60% of indians will get this result positive.He asked me to stop the medicines immediately.But my medicine dr says that it would be harmful to do so.I just cannot understand what to do?