J.B.
No worries, plenty of mamas have found out they were pregnant after drinking, even to excess, taking all kinds of meds, eating "bad" foods, you know, it happens to most of us. I had just had sushi before I found out I was pregnant, baby is just fine :) Just call your dr, make and appointment and go from there. But don't stress about anything, 1)what's done is done 2) stressing won't help anyway 3) Babies are some tough little cookies!!! Hang in there and congrats :D
Oh p.s. my mom had what we now call H1N1 flu virus when pregnant with me and I turned out alright!! don't worry :)