Drinking alcohol.. But not drunk?

Lydia • 19.. TTC for my first baby.
Hi ladies.
Last weekend I went out and had a few drinks and didn't even get tipsy.
Last night I went out and had soooooooo many drinks, and mixed loads. When I came home I will still stone cold sober.
Could this be a sign of early pregnancy? As stupid as it sounds.
Usually I'm tipsy after 1 drink... Xx