tendon

I'm a smaller guy,skinny, 23, been trying to start lifting weights for a few years now in order to stop looking like a malnourished child, but every time i do an injury in my shoulder flares up. It;s at the back of my shoulder and also inside my shoulder blade sometimes, starts off not too bad...

So im after damaging a ligament on the outside of my ankle almost 4 months ago. Ive done physio consistently and although it has helped the injury still gets extremely painful at times and im sick of it at this stage. Does anyone have any experience with something that has healed ligament...