Hello @pink0rchid, I would like to add my welcome to Connect along with @celia16 and others. It's good to hear that you are working with your doctor to find a cause and a treatment. While you wait for others with experience to respond to your discussion, I thought you might like to scan through the comments from other members who have posted about facial numbness on the right side - https://connect.mayoclinic.org/search/comments/.

Here's an article that provides some information that might be helpful for learning the different possible causes:
-- What Can Cause Numbness on the Right Side of the Face?
https://www.healthline.com/health/right-sided-facial-numbness
How soon is your MRI?