"No fracture or other acute focal bony abnormality is identified within the visualized portion of the thoracic spine. Visualized portions of the thorax and upper abdomen appear unremarkable."
So at the urging of all of you (and especially a childhood friend of mine who is a physician -- the words, "YOU MAY NEVER RUN AGAIN!" surely inspired me to get checked out) I went in to see a doctor today. All clear.
The first thing I asked was, "So can I run again before the pain goes away?" The doctor asked how far I was going to run. I was almost afraid to answer this question. "Well, I was supposed to run 20 miles today..." He said running can exacerbate back pain and while I didn't have to wait to be 100% pain free, I could definitely run when it, "improved a bit." You know I take this to mean I can run on Sunday.
As far as the horse thing goes, I am heavily leaning towards giving up riding. I mean, I got my spine x-rayed. The radiology tech got two shots and after reviewing the second one on the computer, he told me to take a seat on the x-ray table while he went to talk to the radiologist. I didn't like the sound of that. He came back and said that the radiologist wanted a closer shot of an area. I really didn't like the sound of that. And in the 40 minutes between that moment and the "All Clear" moment I knew what was important to me.
I don't want to just stop cold turkey and let that be my last ride. I also don't want to leave Wings' owner hanging so suddenly. So I'll probably continue on through March, though that isn't for certain yet, either.
Much thanks to everyone for your concern and advice. I needed to hear some voices of reason.