i suffered for years in my hips with something docs never considered: bursitis. the bursa is a small sack of cartilege-like tissue with fluid in it for the joint to slide over. you might have pulled it loose when you were asleep in the tub. it can hurt like the dickens and never stop, and worse when you put pressure on it, like laying on it. i got help when i went for Physical Therapy. they have a 'wand' that emits infra-red radiation (heat), which somehow helps that tissue regenerate.

i hope you find what you need SOON~!
best wishes~ Gus