Got blacked out first time 3 days ago and still don’t feel 100% normal. Is this usual?

So I, 27M, have never touched alcohol in my life till late last year. Since then, I must have had alcohol on 6 separate occasions in 6 months, never black out drunk. I’ve gotten tipsy 4 times and drunk twice.

3 days ago, I had the brilliant thought to try alcohol and drugs at the same time. I’ve drunk like 250 (neat) ml of alcohol over the course of the evening and got black out drunk.

Since then, I feel like I’m still a bit tired regardless of how much I sleep and my eyes feel a bit puffy. Is this normal, or in my head, or did I mess up my liver?

As an aside, the reason I tried it was I wanted to get the combo experience before I left both permanently.