I am 30 now I got my last period was on june 23 after tat till now I dint got my period and in september I went to gynecologist she advised me to take nostra cr 15 tablet for 5 days still I didn't get my period n now I am having cramps in back as if I will get period but it's 8th day by now no period please suggest me some things from I get my period and after that I can conceive as early as.