If you were my patient, I would advise you that it can sometimes take up to 2 weeks after finishing medroxyprogesterone acetate for it to work. So, you may still have your period. If you don't have it within 2 weeks of finishing, you should probably call your doctor back. At that point, I would then do some blood work including prolactin, thyroid, fsh and lh levels. I would also ask questions about weight loss and exercise. Stress can play a role in causing menstrual periods to stop temporarily too.