Me! Me! If I've been sitting for a while, it hurts so bad to stand and walk again. But after walking a few steps, it seems to get better. If I try to turn over in the middle of the night using my leg, it hurts. Nothing seems to make it better.
I asked my BIL, who is also a doctor, and he said that it's normal. Center of gravity shifts seems to just be the cause of it. He didn't really mention anything that can make it better.
Let us know what your doctor says!