Suggest Medication For Irregular Periods

Hi.. I have a problem of irregular periods.. Last month the doc suggested me regestrone.. All my tests were normal.. (Sugar nd thyroid.) I had my periods within 3 days after stopping it bt this month i took it fr 3 days 2times 5mg each to start my delayed periods its bn almost 5 days after i stopped bt it hasnt started yet.. Im worried.. My height is 5ft 4inches, weight 60kg and age 24 yrs. Pls help.