Hi..I have PCOS...in the month of september2015 I have gone through a ectopic pregnency.No injection or medicine,it was miscarriaged naturally.After that I had two normal period cycle,on time.On the third month my period got delayed.The hcg blood test was negative.i did a internal scanning as well, the tubes are also clear,no mass in them. The doctor prescribed me primolut n - for 5 days,twice a day.I caompleted the course. Today is the 7 th day I have stopped taking primolut n, but no signs of period yet. Please advice.