Okay so I'm almost a week late, but I had my period last month and the first time my boyfriend and I have had sex was last Friday (when I was supposed start but I hadn't yet so we were like why not) since before my last period. We didn't even finish because my little brother got home early...and in general we use a condom and he never finishes inside me as an extra precaution. I know it's probably stress but I'm still scared.