I was asked at my 12w checkup whether I partook in alcohol, and I said 2 glasses a week. The midwife tried to tell me to not drink at all, but well, to be brutally honest, that just aint going to happen!
I wouldn't drink more than twice a week ever during pregnnacy, and never more than 1.5 st drinks. So I'm not a saint, but I am a goodish girl.

As for drinking TTC. Two minds. If you are having trouble TTC, then alcohol by rights should be limited for fertility reasons. In saying that, I know of a couple of OB's who suggest a glass of wine might relax the uterus!
I was in Vietnam for the first 2 weeks of Jenna's conception, and I think I had about 40 cans of beer (if not 50??), lots of Vodka, and Jenna is fairly normal. A little hyper perhaps, but I lay that on her father and the genes from him!