Since you are a minor, I think your doctor has an obligation to tell your parents what he/she finds during the examination and any test results.
Now my question is why don't you want your parents to know what the doctors find? Are you afraid you may be pregnant or have STD?
If you need someone other than your family, there are many organizations you can call, such as TeanCentral.Net @ 1-800-422-4453
Don't feel like you need to deal with problems by yourself. There are a lot of help out there. Let me know if you want me to look up more phone numbers for help.

