Feeling disconnected.

I was vacation and the first two days I was drunk at night with my friends. The first night was okay but the second one was like the first. When I woke up as expected I was still little dizzy and felt like I was in a dream 6 days later I still feel disconnected from the world and I do everything on autopilot. During these times while I was on vacation I was getting like 4 hours of sleep every night, little food and probably want drinking a lot of water. The last two days I have even getting at least 7 hours of sleep, proper meals and good hydration but I still feel disconnected and like I’m in a dream. Do I have brain damage? Does it go away? This have never happened to me before.