okay so...im going to have sex with my boyfriend this coming friday...i should be getting my period in a few days though. so after i do it does that mean i wont get my period because i did it? also...my friend said that she did it and she didnt get her period for 2months after she had sex. is that true?? can that really happen? but. i honestly would like to know everything about your period after having sex. could you please help me??