I agree; think you should never give up on the search to find a supportive health professional as e.g., you'll need someone to prescribe drugs anyway? For example, before agreeing to any tests, use your past experience to ask a doctor to explain why the tests are part of a process to pursue a solution rather than just ordering them because they simply can rule things out or reflect standard protocol. I and others can empathize with your situation but IMO you need to be most aggressive in seeking out someone you can believe in on the basis that they can address and consider all the concerns you mention here, even if it is not exactly what you want to hear. I don't think you'll "be a quitter" just that you need to vent and maybe take a break? I can only encourage you as you pursue someone to help, you make sure you are not starting over but that they totally are aware of your journey and they have a perspective and vision that sees beyond that and is the basis for you to not only not give up, but have some hope and reason to push forward.