Hai Dr. I have taken primolut on april and got bleeding duphaston for 5 days on may and had heavy bleeding since Dr. said I have ammenhorea by checking vaginal ultrasound twice. But on june till now without taking any medicine except euthyrox for my thyroid I did not have my periods. I had an unprotected sex on april. But when I check with doctor and use pregnancy kit but it was negative then why should I did not have my periods? I am unmarried so worried of having pregnancy. I have hypothyroidism taking duphaston, 74 kg, 158 height 22 years old.