Drinking on day of missed period

First of all, we've been TTC for over a year now. On Saturday we were planning on hanging out with some of our drinker friends, so I took a prego test without much hope of it being positive just in case. Sure enough, it was negative and so I drank with the rest of them.

Fast forward two days and my period still hasn't shown up, which is unusual. In over a year of trying and tracking, I haven't gone past being 3 days late. I'm also feeling off, bloated, and slightly nauseated.

So of course now I'm paranoid that if I am pregnant, I messed it all up by drinking. And it wasn't just one or two beers, it was maybe 10 over the course of the day.

Blahhh.

Thoughts and advice, anyone?