you´ve been gone through a LOT!! my sister has a similarity with you, she had a open wound on her head from falling a step (well i might have been involved we were little), she had tonsils taken, she had back problems, she had to use a collar due to a car accident, had a root canal, had a tendon "fracture" (not sure if its the right term), and now she has something in her hand, and she´s been like that since i can remember.

hope it nothing to worry and you get better and over with all this kind of things, i think you had enough