I ve had some back issues, would recommend doing some back strengths and strengthening your core. Get one of those gym mats and do it whilst watching the TV three times a week. At first really really hard, but they get easier if you are persistent and will really help.
I'll second that. Core strengthening might be very good for your back, you could use a fit ball as well as a mat. I had a back op last May and after doing countless amounts of pilates core exercises, my back's much stronger than it was, helps with the rest of your body as well.