am i experiencing dissociation?

i’m not sure if i’ll be able to describe this well because i honestly don’t know exactly what happened but for the past few days, usually in the afternoon when i’m alone, i (F, 21) randomly feel like i’m on drugs when i’m not. my surroundings don’t feel real and everything around me feels muted and dull. it usually happens more intensely when i’m doing my own thing by myself (like at the library, studying etc). it genuinely feels like i’m in a different dimension where i’m invisible and i’m viewing the world from an outside perspective. i feel crazy typing this out lol but that’s the best way i can describe it. i’ve never felt this feeling this intensely before so it’s pretty random to me. though i am diagnosed with severe anxiety and it’s finals week for me so maybe it’s a reaction to stress? i have no idea. i’ve seen that dissociation can be a reaction to severe anxiety but i don’t want to go straight to self diagnosing. any insight would be helpful or if anyone’s gone through the same thing it would be nice to know i’m not slowly going insane. thanks!