stupid question but did anybody get pregnant after having sex less than a week after period ended

Well let's see my period ended on October 31st. It was a normal 5 day period. I had sex on November 3rd. Maybe I'm just getting my hopes up but I've been having migraines everyday and been sick in the morning and sometimes during the day also. The past couple days I've had a weird cramping in my belly and I've been peeing more. I mean maybe I'm just overthinking. Somebody help me out? Thanks!