Do I have a medical malpractice case against the doctor?

I injured my knee in Jan-2013. Made a visit to my Family Dr. The swelling and pain was very bad, so he sent me to a Bone and joint specialist that day. The Specialist did a Ex-ray and schedule me a MRI. He told me My MRI and X-ray was Good. Then he exclaimed to me it one of those injury’s that comes with age when your very active, Gave me a cordoson shoot, a constriction brace and prescribe a pain med's. Informed me to take pain med's if the pain comes back and to use the contraction band when swelling accrue, several month past. During that time the pain and swelling came and went . I followed Dr order's to the tee with the pain med's and band, one night my dog snatch away from me and I ran about 10ft' the pain in my chest almost knocked me to the ground, I could not breath felt like I just ran a 100 yrd dash, I sat down and in about 5 min everything was ok, went home and got into the bed, about 5 am my knee and lower legs started to burn and felt like I ran that 100 yards dash again , made appointment with my Dr. that morn. I told him about the Knee pain, chest pain and hard to breath. He checked my knee it was a little swollen my V/S was good, so he did a blood test and the numbers was off the chart, sent me straight to ER, ER did a chest X-ray and found I had a embolus in my right and left lung. They admitted me that day, I stayed in the Hospital 7 days being treated. The Hospital Dr. and the staff that worked on me found that the embolus originate behind my knee, the MRI and X-ray showed I had a Chipped boned, a possible meniscus tear and some Arthritis. They stated the injuries, the swelling and me wearing the contraction band caused the blood to pool behind my knee and form clots. After doing a little investigation my family Dr took a look at my first MRI and X-ray that was done by the Bone and Joint specialist in Jan-,his report on my MIR and x-ray showed the same damage back in Jan. He told me everything looked good, knee was good.