Chantelle,
I am a newbie today on this site as last week I was diagnosed with MS and still learning just what I am dealing with. Some great and comforting info on this site and I hope to contribute.
Last 3 or 4 years I had similar pains - it was center of sinus area to left ear and would come and go. Heat would trigger some of the time - my dr said sinus issues - so ate tons of meds with little help. I have fought allergies all my life so thought it made sense. Then the balance got so bad I would stumble and was miserable with face pain. My dr said I should see a shrink - huh, he thought I was faking! So, I changed Dr's and within 30 days new Dr ran a B12 test - came back I had very low levels that can cause a deadly version called Pernicious Anemia - I started shots and withing 2 weeks ( 1x a week ) my symptoms had just about vanished...
Now, got along good most of summer and last 2 months many other symptoms have surfaced which has led to MS diagnosis. However the face pain has been very minimal so I would check out the B12 test - simple low cost blood test and you might just get lucky as low B12 can cause symptoms very similar to MS and can cause permanent Neuro dmg...
There is a very good book called "Could it be B12" written by a California nurse - well worth the read...
Good Luck!
Randy