Not on my side

Sleep does not come easy any more. I'm not supposed to sleep on my back, I can't physically sleep on my stomach and when I sleep on my left side like 'they' tell me too sleep comes in bursts of time that last for a few hours if I'm lucky. Last night I was able to sleep for about 5 hours which was like eating a little bit of heaven and tonight after less than three I was up. I'm so ready to sleep on my stomach again.