I need some help. I have had patella tendonitis in my knees for 2 years. Last september I sprained my AC joint in my shoulder lifting, and then a month later completely tore my patella tendon in my knee while jumping. It's been 3 months since my surgery and earlier this week I had a cortisone shot to alleviate my shoulder, then literally the next day my other shoulder starting having the same pain as the one I screwed up my AC joint in. Why is my body detorioraing like this? I am 23 years old, I can't even go to the gym bc my body is so wrecked right now. Any ideas?