Why Haven’t I Gotten My Period 6 Days After Stopping Primolut-N For The Second Cycle?

Hi, I took primolut n for 5 days and I had a period in the next 5 days. So, I started clomid from the 2nd day of period through day 6. In two weeks time, I tested for pregnancy but it was negative. I was asked to repeat the circle again for the second time. But this time around, I took primolut n for the same 5 days and today is the 6th day after the last dose but still hasn t gotten a period. I don t know what to do again.