After laying on the floor and contemplating the ceiling for a minute or two, I staggered to my feet and noticed a throbbing pain whenever I moved my arm. My shoulder was definitely not a happy camper. In comparison, the head thing was virtually unnoticable.
As the day has gone on, however, the shoulder pain has mostly dissipated. But the dull ache in my head has been getting worse. ugh. Hopefully a good night's sleep will make it all better.