Why am I not getting hungover?

For reference, 210 pound 20-year-old female (legal drinking age where I am is 18). I had 1 drink a year ago and have not had anything to drink after that until three days ago.

Three days ago, I had ~4.5 drinks of whiskey and wine. 3.5 of those were whiskey, 70-80 proof. I got a little tipsy but not drunk. Felt fine the next morning.

Two days ago, I had 7 drinks of 70-80 proof whiskey in about 2 hours. I thought I would be hungover after that, but nothing.

I’m just experimenting with what I like and my goal isn’t to get drunk or anything, I’m just curious why I didn’t get hungover after getting drunk. I assumed that after 7 drinks, I would be at least a little uncomfortable the next day?