I am 27 years old and I have been diagnosed of pcos in my right ovary this month while I was on follicular study. I was given clomifene citrate from day 3-7 and I ovulated on Cd15. From Cd15 I have been advised to take duphaston twice daily until my next period. Today is CD34 but I still have not got my periods. I had a UPT on CD29 evening bht it was negative and I have been having cramps from CD17 which increased on CD29 as if I am going to get my periods but still no signs of periods and the cramps are on and off. I have no other signs of pregnancy except for breast tenderness which is now decreasing. What could be the reason for my delayed period? Should I stop taking duphaston?