Ok now im confused i had my period aug 26, 2016-aug 31, 2016 my period went off aug 31,2016 i had unprotected sex aug 31, 2016 i went to the bathroom to pee now im bleeding but its only when i wipe i logged my period into the app why is it saying my next period is expected sept 12, 2016 is that normal to bleed or have a double period