Need help figuring out what the deal is with my shoulder?

For several years, I would go outside with my kids and throw the football. (Would frequently launch the ball over the house, across the yard, down the hill and in to the drive way, so I could hear them freak out about the coolness of my super human throwing abilities.) Well for a year and half, I have been paying for it big time! My shoulder hurts every single day in varying degrees. The pain stays at about a 4 or 5 and frequently shoots up to a 7 or 8 at some point during the day. I have pain when I lift my arm. Some days if I move my neck in certain positions its excruciating! It just won't stop. I try to hold out as long as possible but typically have to take Motrin or Tylenol at least twice a week. (Just to avoid the stress of feeling pain.) Does this sound like a torn rotator cuff? Would an injury like this heal on its own after a certain amount of time? I kept hoping it would but it isn't, and I'm tired of living with constant pain. (Doctor isn't really an option for me $$$$)