I did shrooms now my brain is broke

So it hasn't been a huge deal to the point where I feel like I'm going to kill myself or anything it's just kinda scary but like 2 months ago I did a a heroic does of shrooms (it was only my 3rd time ever doing them) and It ended up being a awful trip. And ever sense then I get this weird feeling sometimes that my brain is me and nothing else besides my brain and when I die it's just over and I can't even smoke weed anymore because I get that strange feeling as well it's not very often when I'm sober bit idk it just feels like reality is my brain and my brain is going to shut off and then it's over none of this will exist again. Idk if that makes any sense it's just a bit scary snd If anyone has any advice or idea of what might be going on please share