Hi Ashley,
I had my surgery on 2/12 and I know exactly what you're going through. I HATE sleeping on my back, and had no choice the first few nights, so I got very little sleep. Around the 4th night, I was able to get on my side with the help of pillows, and it made all the difference. I also took a sleeping pill so that I could get uninterupted sleep. Sleep is really important in your body's healing, so do what you can to get some. I hope that helps. Hang in there, by day 5 you are going to feel so much better.