OK so me and my girlfriend has sex a few days before her period and she is on the pill and she still have her period after we had sex.So if we had sex before her period and she is on the pill and she still had her period does this mean she is not pregnant? She took the pills you take when your on the pill,she took Sundays,Mondays then on Tuesdays pill she had her period, but she still had it so does this mean we are all good?