Got drunk for the first time, and drank a lot in 3 days. Appetite has still not came back 36 hours later.

I am 20M and weigh about 200lbs. This was my first time drinking a lot, getting drunk and passing out. I had very small amounts of alcohol on the 3rd, 1 seltzer on the 4th, got wasted with lots of tequila, vodka, and seltzers on the 5th, and then 2 shots and 2 seltzers on the 6th. I completely lost my appetite, I’m having struggles sleeping, and feel slightly nauseous still. I don’t know if this is a hangover or something else. Any recommendations on what to do? I am mostly concerned about the appetite as I am always hungry, and me not being hungry is not normal.