Hi, i have been on birth control for a few years now and my boyfriend and i had sex. With a condom, but he accidentally put the condom on wrong and flipped it back with possible pre cum on the tip. I did start my period the next day as planned, it was light then lasted 4 days. Can i still be pregnant? Im just really worried, i woke up alil light headed and felt sick, but didn't throw up. Its been 7 days since my period stopped. Should i still take a pregnancy test?