OK...have been trying to avoid saying this, because I don't want to sound like a big doomsday wet blanket...
But, if you get an immediate fitting, and then it doesn't go away pretty doggone fast...maybe see a sports doc...one who is used to cyclists?
I only say it because about 20 years ago...I ran and I ran and I ran...and my knee hurt and hurt and hurt. I didn't go to the doc because I didn't want him to tell me to stop running.
Finally, I had to stop running, because I could no longer walk. My knee has never been the same, and I wonder what might have happened if I had quit immediately, and gotten some other help (orthotics? or rest before the injury got bad? or...I'll never know).
Maybe look into a doc that is experienced with cycling athletes?
"The best rides are the ones where you bite off much more than you can chew, and live through it." ~ Doug Bradbury