Originally Posted by Blackberry
I'll spare you the boring details, but if you've got back problems, you may want to consider two things that really helped me a lot.
1) Yoga. Ya gotta be careful to stretch without overdoing it. A good instructor or video will show you how.
That's great progress. You are wise not to push the issue and increase your cycling time gradually.
I think its interesting, my physician prescribed physical therapy, which turned out to be a number of stretching exercises for my neck problems. Apparently the muscles try to compensate when an injury occurrs to the spinal area.
Here's hoping your progress continues.