I have read conflicting advice on this - and am a little confused.
I know the government now recommend complete avoidance, and I obviously will be in the first trimester.
However, some sources seem to suggest that one or two units once or twice a week is ok(ex. source: www.guardian.co.uk/lifeandstyle/wordofmouth/2009/nov/02/drinking-alcohol-pregnant-advice)
I quite fancy a glass of champagne on my birthday or even - gasp - a small glass of wine once a week. 
What do you do??