How's your sleep?

I'm 26 weeks and for the past 2 weeks I have been stuck laying on my back. Now this is a position I never sleep in. If I roll over to either sides I just start feeling sick. I would sleep on my stomach but same thing, I feel sick. I go to bed around 9 and get up between 6 but between those hours I only get between 3 and 5 hours sleep. Lost of the night in tossing and turning trying to get comfortable. Anyone have suggestions on how to get a better sleep. I'm so over being completely drained all day everyday.