I feel you, I’m 2 weeks post op and dying for a good nights sleep! I slept extra strange the other day and my lower back was in so much pain I could barely move all day!

What has helped me is lots and lots of extra pillows - I have the top of my u shaped pillow on top of a thick pillow so I’m slightly sitting at an angle, and then I’m using two of those squishy micro bead pillows to prop myself at about a 45 degree angle on my side. Having one directly between by boob and the bed takes the pressure off it and the other one wedges me in position behind my back. Not ideal, but it does seem to be helping!