I had my last period on 9th april ,got amrried on 15th april and took a i - pill on 19th april after that i ahvent had nay period , ultrasound revealed a cyst but the isze of the cyst has been reducing as per last ultrasound ,that too witout any medicine now since 2 days a lot of pain in lower abdomen , i have started taking duphaston ..kindly suggest by when will i get my period.