I missed one day of birth control had unprotected sex the next day and took two birth control pills any chance of me being pregnant?

Maybe, but...: The usual instructions for when to take a birth control pill that was forgotten, is to take it as soon as one remembers it, and then stay on one's usual pill-taking time schedule the next day. If on a combination pill (2 hormones in the pill), chances of pregnancy are not noticeably increased in this situation. If using a minipill (1 hormone), chances are increased, so one should call her doctor.