s not giving you problems when you go to sleep, but is stiff and sore for a long time
after rising, try
sleeping in a recliner; or, roll a comforter into a tight bedroll and place under your knees; may also need a comforter folded to fit under your upper body, creating a drop-off into which your fanny will fit. The bigger your fanny, the higher the folded under-torso comforter needs to be, creating a bigger, "valley," so to speak, for your fanny.