I am rather new to this, as I have become self-educated over the past year as my wife has been cycling-through the conservative forms of treatment for degenerative disc disease with a positive attitude and much enthusiasm, but absolutely no success in pain relief. We're both 30 yoa and this has been quite difficult for her...As I am sure that you know...
Did your doctor tell you that there is nothing that can be done to help with your condition?? If that is what you were told, then I would question his/her credability in even reading the mri...Much less diagnosing the problem and "helping" you find ways to deal with it.
Ddd is typically treated in three very logical steps, beginning with basics like exercise and otc anti-inflammatories like ibuprofen...With surgery being the third and very last option.
if left untreated, it will eventually restabalize itself to some degree and the pain may decrease, but going away. The disc will eventually deteriorate completely and the nerves that are the source of the pain now will eventually die, or "burn out". However, that is not the end. Progression will almost always result in osteophytic formation (or "bone spurs") which can cause further irritation and multiple complications may also follow, which are far from "pain-free".