So uncomfortable!

Erin
I know that I'm not supposed to sleep on my back (sucks) and while I am still able to sleep on my tummy without pain, whenever I feel my little boy moving a lot while I'm on my stomach I just turn to my side to make sure he's comfortable. But my hips are killing me! Lol. They're tired and almost sore, I'm assuming from constantly being on them while laying down. Any of you mommas going through this? What do you do do get comfortable? HELP ME lol.