Yeah, as someone in the field, let me be the first to tell you that "online tests" are only slightly more accurate than rolling a die.
Your best course of action, if you can afford it, is to simply schedule a consult with a certified psychologist (and if possible do some research on him to see if he knows what he's doing). Anything you say to them is confidential, so short of you telling people you're going to see a psychologist, nobody has to know a thing, since you seem to want to keep it secret.
If you're still in school, some schools have pretty decent counselors that might be able to give you some more specific recommendations on the matter.
I will say one thing: The defining characteristic that differentiates between a pathology and a simple personality trait is whether or not something is affecting your life, your ability to live properly. If this isn't honestly affecting your life, if it's just "something an online test said", then don't worry about it. If you feel you have issues that are seriously impairing your quality of life or your ability to function properly, then you need to seek proper professional counseling. That's what psychologists are for.
Goodluck.