The worst feeling ever?

Hey my name is Mike and Ive been felling horrible for the last 4 weeks. i haven't slept since then and i feel my body trying to adjust to its normal self. I feel like im living in two body's. i feel like if i let my self go and relax i feel like im going to fall in a coma. I had too much to drink and smoked the same day and since than i felt horrible and cant function correctly. what should i do?...Need answers fast