Alcohol is made by turning available sugars into alcohol.
Wine DOES Have some carbs, as the low alcohol content means some of the sugar remains.
White wine has about 1g of carbs/4oz, and red has 2g/4oz.
Gin, vodka, brandy etc all have no carbs, because the higher alcohol content means that ALL of the available sugar has been turned into alcohol.
Whiskey is my favourite.
Also, what were you eating? I know that when i'm drinking i have a terrible habit of snacking on lots of little bits.. crisps, nuts, etc.
I've learnt to watch myself and remember.
Personally, I can't tolerate wine. I don't like it anyway lol. I stick to liquor and mixers.
It's all experimentation, and you learnt something, which is good.