Medical Malpractice?

Oct. 11 2006,injured at work,teacher asst. disabled children,hand crushed in filing cabinet. Imm. reported to HR ,then to school nurse, then Imm. to workman's comp Dr,they examined hand,swelling in small finger,xray,splinted in case of pending fracture. week later: small finger pain,can't move it,swollen. xray had a mark on small finger but no fractures,advised to exercise and take advil. Week later: same symptons,pain is worse, stiffness is in hand. Told to do more hand exercise and take advil. Next Week: hand worse,same symptons,still can't move small finger. Dr refrrs me to Hand specialist for eval. Nov 3 2006,Hand Dr. examines, gives cortisone injection in small finger,send me for an MRI,had MRI done that day, Nov 17 2006, Dr. states that MRI showed flexor tendon severed in small finger,needs surgery to re-attach. Nov 22 2006 (42 days after injury) had surgery to re-attach tendon. Physical Therapy was approved and started Dec 12 2006 (20 days after surgery).Injury never improved, tendon was re-attached, but still sonstant pain and swelling. May 2007 hired workmans comp lawyer in hopes of my medical treatment getting improved and retaining my employment until my hand was fixed.BTW: hand never fixed and I loss my job. For the next few yrs I had to go to various Dr.s,finally in June 2010 while being examined by the permancy Dr. it was explained to me that the reason my finger is deformed and I am in constant pain is because the tendon shrunk during the delay in treatment/surgery. My workman's comp case was just seattled for 25% loss of right hand (dom. hand) and 2yrs open medical. Medical Malpractice statue is 2 yrs from injury, but would this fall under the Discovery Rule? Do I have a case?