I had that for several years, it would come and go...as you said, only on the left side, a strong ache. (Actually, in my case, it was only my jaw.) I also went to my dentist and then an oral surgeon, and they found nothing. Ibuprofen helped for about 4 hours, so I was popping those things like candy. Then it would just be gone.
If I remember right (and that's always a toss-up!) you said that most of your pain in general is on your left side, and I said mine, too.....or maybe that wasn't you. That has always mystified me.
Well, anyway, hopefully your pain will be gone soon....
Moderator, Fibromyalgia Forum
Fibromyalgia, herniated disc L4-5, (with recent surgery), bulging disc L5-S1, other assorted spinal deterioration, scoliosis, Hashimoto's Thyroiditis, IBS, migraines, tachycardia, hearing loss (probably Menieres)