Help! On the 1st of January I had sex (with a condom) with my boyfriend. The condom didn't break or anything and nevertheless the actual penetration didn't last long. Side note, he didn't finish while he was inside. I had my period as I normally would on the 5th of January, I didn't notice any changes with it, it was heavy as usual, but it did stop around it's fourth day. Now I sort of feel nausea, I have migraines and I nearly feel like vomiting, haven't done it yet though. Is tgere any chance I was ovulating on the1st therefore I could be pregnant?