I workout a lot and one day during my deadlift, I exceded my limit. So, I had a little pain a while after that in my lower back and it evolved a little bit. I went to the doctor and checked it. He told me that it is a lower back pain in the tendons right in the lumbar region. He gave me some muscle relaxant and it really helped for that time. After I finished the treatment the pain stayed but not like before. So I started stretch more when working out and focused on the form not on the weight. But it has been 4 months and the pain still there. Some said it may be a chronic lower back pain. Is there some kind of workout that might help to cure it?
Summit Medical Group has some great rehabilitation resources. Here are some strengthening and stretching exercises they recommend for people with low back pain.
On the page linked above, they also suggest sports and activities to avoid, as well as activities that are good for people with lower back problems.