L.B.
Workers' Comp has a time limit for filing and reporting an injury. If you wait too long you'll lose any ground for them to pay for anything. Consult a Workers' comp attorney and/or at least the Workers' comp commission who should have an ombudsman on staff who can guide you. I'm a court reporter and have done numerous hearings where the Workers' comp insurance carrier was denying benefits because of a simple time issue. There are certain laws regarding it and if you don't do it just right, the insurance company can weasle its way out of paying and get away with it and you're left holding the bag.
Good luck!