i had sex on the 25th which is when my period was due. It hadn't started yet so we had sex anyways. He stuck the tip of his penis in and then pulled out and put a condom on. Then we replaced the condom for a new one because we'd been going at it for a while. He believes he accidentally got some pre came on the new one as he put it on. Now I am 4 days late. Now I know it's very unlikely but is still possible to get pregnant no matter how careful you try to be when having sex. These past couple days I have been light headed every so often. Not sure if that is normal or what. Anyone else experience this maybe. I don't know. I could just be paranoid. But 4 days late is really late to me because I'm always right on schedule. Never more than a day off on my calculations!!!