Have to agree with what everyone else has said, I had some mudslides (mmm I miss those) and margaritas before I realised, and the dr was like 'no worries'.
And even during pregnancy, just consult your dr as to what they think you can have.
Although I'm not really into alcohol at the moment anyway, I tried at our best friends' wedding, and just ended up staring at the bubbles (I was pretty tired)! So, problem solved for me!
But just ask your dr what they reckon.