4 months ago I was on diet and exercise and my period stop after that, so 3 months ago i returned back to normal eating, but still my period didnt come, is it normal? What causing this?...My last period was in the end of september, I went to doctor in march and i have taken dydrogesterone for 5 days starting from 5th march 2014, but still I dont get my period today right after i finished dydrogesterone...Im so worried....when will i get period? is the medication enough or do I need to take more dydrogesterone? or do I need to get back to the doctor or just wait for a period of time? can i know what is purpose to take this dydrogesterone?