I had sex with my Girlfriend on 13.03.2014, but her period date is 17th and today is 21.03.2014 she is not getting period still, Sir one more thing i had sex but i confirm i don t flow our sperms in side, and pregnancy test report is Negative (pera news, pregnancy tester) so i m confused give me a proper way what i do. Nd if there any medicine for early period then give me details. thanks Regard Rahul