Yeah i get this,

Things seem louder and if not in a good enviroment it can send you under, its important to control yourself and just think to yourself "Im stoned and dont give a fuck" and just imagine away.

Once i could feel my pulse all over my body and i had a picture of my heart in my head then i stopped feeling my pulse and it sent me under to fuck.

Also had a similar experiance when my throat feels fucked i imagine i can see in my mouth and sometimes when i swallow i send myself under thinking it went down the wrong hole and stuff, anyone had something similar?