What Causes Itchy Brownish Vaginal Discharge Before Menstrual Cycle?

Hii, I just want to knw tat before 3 to 4 months i was suffering with fungle infection in my intimate area. Doctor gv me forcan 150 mg tablet. I took 2 tablets in a month, after tat i m feeling relaxed.. Bt arround 45 days agin i got same prblm n hving brownish flow before my peraids date with itching bt after peraiods its lyk normal.so is their any chance of critical problem...