Last night as I got out of bed for a moment, I felt a pronounced tenderness on my right side about the size of my fist halfway between my waistline and the bottom of my ribs (where I presume my kidney would be). Thinking is was back pain , I had my wife massage the area, but that turned out to be quite painful. Bottom line, it seemed to be very tender to the touch. When I woke up this morning, it felt @ 75% better. Any thoughts?