hi.me and my grlfriend started to have sex more often this month.Im sure we used condoms plus the withdrawal method w/ condoms.it was kinda messy.Last time she had her period at the 29th of february but now shes 6 days delayed.i'm really confused because she always has her period between the 27th to 2nd of the month..but now,shes delayed and im starting to get paranoid..is she pregnant?she hasnt taken any PTs yet.thanks.