Sick feeling laying down

I lay only on my back now because when i lay on my side i end up having puke come up.. so gross i know... Im guessing its related to acid reflux. I feel bad for sleeping on my back.. sometimes i cant though because when i do i feel dizzy like im about to pass out. Is it okay to sleep on your back as long as your propped up? I wish there was a position i could sleep in comfortably. I dont like sleeping sitting up