hi, last night i went to a house party and i was drinking from 8 till about midnight i believe and i don't remember leaving my friends apartment or how i left and how i got back to my residence, and it's scaring me as to what happened when this happened, but also I am feeling shaky and cold right now, my stomach doesn't feel at ease, and i feel tired and sort of "out of it" but the thing is i haven't puked yet, what do i do or what's wrong why do I feel like this still ?