I have surgery to remove a polyp so the doctor put me on Norethindrone to help thin my uterus to make surgey easier and prevent me from ovulating so I wouldn't get pregnant before the surgery on the 20th. My period was suppose to start on the 22 and has not yet come. How long will it be before my period comes and I ovulate again so we can start TTC? Will I need to have my doctor put me on something to jump start that process?