[Reach]

Well, chronic pain is complicated. It can come from many sources and everyone experiences it differently in my experience.

I would start by losing weight as your priority. This starts with diet and getting yourself onto a diet that is at a caloric deficit and will cause fat loss.

I would begin doing light cardio and light resistance training regularly to get your body used to moving again once your diet is sorted out. You'll probably find it will help manage the pain to some degree. I would consider mobility and flexibility work as well if you're inflexible.

If you want more details on plan structuring etc feel free to ask.