I feel like I’m in a dream

Hi all. I feel drunk, I feel like I’m in a dream. On the night of December 28, I drank about 3-4 cans of beer and in the morning something came over me, and this happened twice and after the second time it did not let me go. I feel as if I’m living drunk but haven’t been drinking, and this state has lasted for more than three months. Then, on the night of December 28, I had almost my first experience with alcohol, tell me what to do. I read on the Internet that this is dissociation (derealization). Is it possible that this is some kind of mental disorder, and tell me if you had such a condition, feelings. Should I see a doctor?