I was massaged, poked, prodded, zapped with electricity and ultrasound, heated and given exercises.
I felt miserable yesterday afterwards, but I woke up feeling better this morning.
I still have sore legs (the other new symptom that arrived at the same time as the sore back), but my back is feeling so much better already.
Today, I've been doing my exercises and using a hot water bottle.
It's helped a lot.
Strangely, even with my legs still hurting - I feel far more positive. Pain is depressing, it always makes me feel miserable. Getting rid of one bit of the pain is a big improvement. It's a huge improvement.
Someone else is covering for me on Sunday, so I don't have a church service to prepare. It means I can do the absolute minimum this week, while I recover from my few incredibly bad days.
So while I feel like I've been through the wringer, things are looking up. And that's great.