Are my symptoms indicative of TMJ?

Hi. Chronologically symptoms as follows since May22. Had oral sex which left a bad taste in mouth for some hrs. Got done long pending RCT on left side of mouth in June. In between treatment, had a swelling once for 12 hrs in right jaw end (just below ears). Also started feeling pain at both jaw ends while rinsing mouth (now resolved). Around July, pain in  both ears (now resolved). Symptoms since Aug:  occasional headache, metallic taste in mouth (most persistent symptom), tightening of neck muscles, on & off pain sensation in throat, some mental confusion (since jan22) and stomach acidity. I should add that I found my b12 level to be low (17) in july but now at 300 with medicine (but mental confusion persists). I have dull pain in that teeth where RCT was done when I take tea. Lastly, there is no clicking sound when I close my jaw and not much problem in closing/ opening.Is this related to TMJ. Why does my RCT area pain when I have hot tea. Could it be  neuro or STD related issue.