Oh gizzmo! Don't worry about the drinks! I had a blood test for this time around after AF was a week and half late and it was negative so I had quite a big night on the weekend after we got the BFN. Then a week later found out I was six weeks pg cos AF still hadn't come. Everything so far is fine (cross fingers). Lots of people drink in early pg because they have no idea they are pregnant and their bubs turn out just fine so please don't worry about that. Maybe you ovulated later than normal, esp if your AF is usually on the dot regular. Don't give up hope yet. I don't want to give you false hope. Am just speaking from my experience. If AF still hasn't come after five days, I'd get another test done. With Amy I didn't get a positive test until AF was five days late. HTH.