became pregnant in 2008 and delivered a baby boy in 2009, but unfortunately it was a still birth. My second delivery was in 2010. My menstrual cycle was not periodical for the last 7 years, sometimes with a time period of 2 to 3 months between two cycles. I took the drug Letrozole 2.5 before 2 to 3 months of my pregnancy, for both the pregnancies. I breast fed my daughter till April last year. My menstrual cycles were periodic from May till October, but then it stopped. My doctor has prescribed Medroxy Progeste Rone and today is the last day of the 5 day dose. How long should I wait before my periods come? Should I go for any other tests?