Extended brain fog and fatigue after heavy drinking?

Ok, so for some background I’m not a very frequent drinker, but I’m a freshman in college and Sunday and Monday night I was at parties and drank pretty heavily at both, probably around 7-8 drinks each night. The stereotypical hangover symptoms(headache, nausea) weren’t as bad as I was expecting and only lasted about a day, but towards Tuesday afternoon I started noticing that I felt really foggy and fatigued. I thought I would sleep it off but Wednesday I woke up feeling worse and had a huge spike in anxiety. I ended up feeling bad enough that I went home temporarily to get checked out and recover, but it’s now nearly 5 days since I drank and I still haven’t seen much improvement. I feel super fatigued and foggy, like I can’t really think clearly, and I have this sort of disconnected feeling as if I were buzzed or slightly high. I’ve noticed that in the morning I wake up with a big spike in my anxiety and feel worse than I did when I went to sleep, and it sort of gradually improves over the day while never quite disappearing. Last night I randomly woke up at 3am feeling super anxious and panicky and tossed and turned for the rest of the night, which is probably why I feel worse today. I went to the doctor to get an EKG and my vitals checked and everything was normal; he seemed to think I was just overtired, but I’ve never felt like this even when super tired as far as I can’t remember. It’s making it more difficult to perform daily tasks, I don’t feel safe driving right now and it took me a ton of time and effort to get my calc homework done yesterday. Additionally, I’m also on Prozac for my anxiety if it‘s relevant. I mentioned that to my doctor as well but he said fluoxetine is generally a very safe medication and there aren’t any serious interactions with alcohol. I’m getting some blood tests today so I’ll see if anything comes up there, but should I look into getting something like an EEG or MRI so I can check my brain? I’m sorry if this post is really long and rambling, I’m super stressed out right now. I just wanted to know of anyone else has had similar experiences after heavy drinking or has any idea what’s happening to me right now. Please give me any advice or experience you have as it’ll hopefully help reassure me.