Sounds like you might have TMJ -Temporomandibular Joint Syndrome (TMJ). I have this too. As does my mum and sister so genetics going on there by the looks of it. My mum had numerous teeth pulled out as in her case she had toothache from TMJ and the dentists were clueless! Her teeth were fine. It was her jaw causing the pain.
I have found magnesium helps with my TMJ. I used to be able to crack my jaw so loud you could hear it at the other end of the house! lol With magnesium....you need to be very close to hear it now. Anyway, I was magnesium deficient and had a lot of symptoms including light sensitivity and anxiety.
You might want to give magnesium a try. Especially if you suffer from stress and anxiety! Avoid magnesium oxide. 4% absorption. I tried it.. meh pretty useless. I like magnesium citrate. This info is from Medicine Net - Temporomandibular Joint Syndrome
"Signs and symptoms of temporomandibular joint dysfunction include the following:
Pain or tenderness in the jaw, especially at the area of the joint
Popping/clicking of the jaw (crepitus)
Pain that feels like a toothache
Ear pain (earache) or sounds of cracking in the ears
Ringing or popping sounds in the ears (tinnitus) or a sense of fullness in the ears
Headaches, including migraines
Tight, stiff, or sore jaw or neck muscles
Muscle spasms in the jaw
Facial pain, mouth pain, jaw pain, cheek pain, or chin numbness or tingling
Pain at the base of the tongue
Pain, swelling, or a lump in the temple area
Locking or dislocation of the jaw (usually after widely yawning), referred to as lockjaw
Dizziness or vertigo"
To add, I found this which is interesting! So many possible symptoms of TMJ...
"TMJ patient may also suffer with photophobia, or light sensitivity. A dislocated TMJ may produce pain in and behind the eye which can cause sensitivity to light. Blurred vision and eye muscle twitching are also common in TMJ patients." - excerpt from TMJ Headaches - What are the symptoms Of TMJ.