Afraid If I damaged my brain.

About 2 years ago when I was 15 I don’t fully remember but I remember drinking about half a 26 ounce cup or a bit more then that then drinking possibly another half cup of 50 percent gin, I was also on prozac around that point. I don’t remember much, but I am just really fearful I hurt myself or I damaged my brain because I just remember falling at every corner, I peed my pants, I banged my head against the shower bc I fell in it with the curtains torn down and I remember how I made it back to my bed and laid down somehow whether I crawled or something. I remember apparently “throwing up” in my sleep and for some reason my sister woke me up telling me she changed the sheets I threw up on but I thought I was laying on them? Or I don’t remember being told to get up so they could change them, and I don’t know why they didn’t ask or anything really if I took anything. I was at my lake house with my grandparents and for some reason thought that was a normal amount to get tipsy,

I just feel really just kind of weird, I have had depression since but probably from traumatic experiences and being left by my ex but I have been diagnosed with OCD a while ago and scared because I ruminate on things. Do you think at this point I am okay and safe? I just don’t know how any of it could have happened from me not remembering them changing my sheets to them not really asking about it the next day or thinking i’m sick or something.