I do have a new question: is it odd that I have chest pain (front and back) on my left - it hurts when I lay on my back and has felt like it was rib or lung area, and if i take a deep breath it hurts a little more, but it feels like it's muscle or rib sore-type pain, not lung-type soreness. I'm usually a left side sleeper, but have been sleeping only on my back for 4.5 weeks except a little on my left side (with pillow between my legs - my OS's PA said to do) the last few days. When I change to my side, it seems to help, but sometimes the side position is uncomfortable for my replaced right hip, so I move back to my back, and then my left front and back chest hurts again - sometimes wedging a pillow under it helps. So I haven't been sleeping well the last few days. Since I use my cane with left hand and put a lot of body weight on it often, I'm thinking it's related to that. Any thoughts? Thanks in advance!