Hi I just stopped taking medroxyprogesterone. I used it for 9 days to delay my period. The day that I regularly get my period was the day I had an exam, so I had my period on December 24th 2010. I was wondering if there is possiblility that this will screw up my menstrual cycle? Also how long after getting off this pill(only took for 9 days, and 10mg tablets each day) can I expect my period to come back? By the way I'm 17 if that helps and have no medical problems and I've been having my period since I was 9.