Should I see Another Doctor if I am Not Improving?

Yes. Sometimes, an initial doctor does not diagnose your problems correctly. In other situations, the damage you have suffered could be more serious than initially realized. Get a second opinion.
The last thing you want to do, however, is to self-diagnose your problems. Chances are you will not get the treatment you need, and your condition might worsen. If so, you can receive less in compensation than you might otherwise qualify for.