Okay my friend had sex with her bf a week in a half two weeks before her period. they didn't use a condom for 5 minutes she said he didn't go inside of her. She has now gone almost a week past her period date and she still has not gotten it. she even woke up and vomitted. She has felt sick and hasn't eaten much. what to do you think is wrong with her. how can i help. ~~Lindsey ~~