I hope it helps

One other thing that occurred to me and you should be prepared for is that since your parents get all the policy information, it's very likely that they will get an "Explanation of Benefits" (EOB) for every doctor's visit/test/procedure that you get. This will list who you saw, what you had done, what the cost is, how much insurance is covering and how much you're responsible for paying (they won't get the bills from the doctors/facilities, those will come directly to you, but they'll know how much your bills are going to be). It won't give them the results of tests or your diagnoses or any details about your conversations with the doctors or anything like that, but they'll have enough information to worry/be mad/react however they will based on how or if you've prepared them for what they're going to see. It might also be clear from what you're having done what you're being tested for (if the tests are specific enough and/or your parents are knowledgeable enough). Just FYI.

I am not telling you this so you'll decide not to go through with your plan to find a doctor and seek answers (it sounds like you've decided you need to do that, and I trust your judgement there, so I would NOT let this factor into that decision). I just want you to be realistic in deciding what and how much you want to share with your parents, and at what point in time. If you don't prepare them in advance somewhat, you are probably going to get some pretty upset phone calls once those EOBs start arriving.