Currently dosed with the cold that seems to be doing the rounds. Tested negative on lft but will be getting pcr tomorrow just to be sure it's not covid. Very typical head cold symptoms sore throat, runny/blocked nose, muscle aches etc. Woke up with jaw pain today which is nothing unusual as I've tmjd, however I have been getting pain in a lower premolar. It's an achy pain, the tooth feels quite bruised which is tender to touch. Dont think I hurt it by clenching as I wear a mouthguard that prevents my molars/premolars from touching. So just wondering if sinus issues/a cold can cause toothache in the lower teeth? I know its common in the maxillary teeth but never really heard of it affecting the bottom. When my tmjd plays up, it tends to be the actual molars (as opposed to premolars) that hurt so dont think it's from that either. Any advice would be much appreciated!