Sparse posting from me this morning; I hurt my back yesterday and can’t sit too long at my computer! :-(
I've got a pain, too, but it's a bit lower.
My name’s aligncare for a reason.
Ice the painful point in your low back for 30 minuets on / one hour off, 3 or 4 times today. Stay in a position of relief as long as you can. Use a support if you must move around. OTC pain relieves should be used regularly for 3 to 5 days, not sporadically taken.
Good luck.