Still feel weird after getting drunk

I’m a 15 year old boy and 6 days ago I got really drunk and blacked out, I spent all night puking and when I ate in the morning I puked that up too. I haven’t puked since then and it’s not that I feel hungover now I just feel weird, my appetite has been a lot weaker since that night and I feel kinda tired and overall just off. I’d rather not go to a doctor about this unless it’s serious. Due to my lack of appetite I’ve lost 4 pounds in the last 6 days which worries me but if my appetite comes back I know I’ll regain it. I just want to know if there’s anything I should do, if it could be something wrong with my body or maybe it’s all in my head. If I continue to lose more weight I’m going to the doctor.