Hi Dr.i Am 34 Yrs Old Last Month My Period

hi dr.i am 34 yrs old last month my period december 8th to jan 18.i go to gynec dr she told me trafic mf take 3tab for a day in 5day that time my bleeding stop but this month also same problm 14 day is going on that same tab i took with my dr. permission but not yet stopped what will do plz help me doctor.