Woke up this morning and felt normal until standing upright. About a handswidth above the belt, dull throbbing when static to stabbing with movement.
Can't imagine what I did to cause this - lifting/carrying a crate of CMP 3006 yesterday was the only thing unusual. Didn't hurt at all at the time, or at any time throughout the rest of the day.
I don't have anything stronger than advil, tylenol, or booze. Never had anything like this before. Any suggestions much appreciated.