Replying to Trampoline Back Injury

Ok, I was praticing misty 5's on my trampoline for about an hour or so. Towards the end of the session I got this irritating feeling in my lower/mid back. Im pretty sure it is a pulled/strained muscle. I did this before in the winter and it healed within a week. The first few days, I had pain whenever I stood up/sat down, after a few days there was no pain at all unless I did anytype of jumping or anything like that. Fastfoward 2 weeks and the injury is still at the same stage, no pain accept for demanding physical activity that uses the back muscles. The injury is not causing me any pain, but I can't do anything. I want to practice on the tramp really bad, but I know I should wait for it to fully heal. Has anyone ever dealt with this before?