Yes you are hyper-focusing. Obviously no one can tell you anything on here for sure as you know, but could it be the case you see the dr fairly often...
You may be surprised but this can actually be an early symptom of sinusitis. A friend of mine had similar symptoms in the early stages of sinusitis....
I have a mammogram coming up soon. Despite knowing odds are in my favour, scan benefits etc... I am terrified and full of what ifs ... I know I have...