Bad brain fog a week after drinking

Hey, so I wanna preface this by saying I’m a college student (19F) and have been drinking pretty often for the past year and a half. This summer I haven’t really gotten drunk, so it’s been a bit of a break for me. This past weekend (Thursday, Friday, Saturday) I went on a trip w/ my friends and got really drunk. Saturday especially. I had a bad hangover Sunday; the worst of my life tbh, and I threw up. However, this isn’t something I’m not used to.

Since Monday (it’s Thursday now) I’ve had this awful brain fog. I can’t see clearly, my head feels like it’s stuffed up, and nothing feels real. I’m sleeping so many hours a day and I’ve had to call out of work because I can’t focus. I just want to know if this is normal and if it’ll go away. I’m moving back into school soon and have a trip to Europe this week. This has never happened to me before and I just want to know if it will go back to normal, or when it’s likely to.