I hate to have to break it to you, and I'm not a doctor, but I suspect that you may have a compulsion of looking things up and researching your illness. That would not be "pure O." A compulsion can be anything that you do to try to relieve your anxiety due to obsession.

I recommend stopping looking up your illness and symptoms. Maybe keep a list to talk to your doctor about it later and get yourself distracted with positive outlets for your anxiety (exercise, dancing, art, conversation, volunteering, etc.). By stopping your compulsive behavior, your obsessions will no longer be fed and the cycle should stop or lessen with time. Do you see a therapist? I would recommend finding a psychologist who will encourage you to stop compulsive behavior. Do you take medication? I would recommend seeing a psychiatrist for a diagnosis if you have not yet gotten one.

Best wishes!