Sleeping after a BBL?

I had a BBL on 6/1/16. My surgeon only got 300 cc's into each cheek, he mainly put it on my sides, so I have a nice hourglass figure. I don't feel like there is a lot of projection from the side view, but whatever. Over 9,000 dollars, and I'm not 200% happy. Im having a really hard time sleeping. Obviously my body is still sore & swollen. I've tried sleeping on my tummy and it seems to hurt more. I put pillows under my lower back to keep pressure off my butt, & that makes my back hurt worse