I’ve always been prone to these things. I’m 46. I just never had them this bad. II have 4 on the upper left lip. Ouch. I use OTC medicine and it finally formed a thick scab. But I am not getting pressure and soreness in my upper jaw and gum area on that same left side. . Was curious if one had to do with the other. I’ll go to the dentist once my lip is healed. Cold and hot don’t bother my teeth And I can chew food fine on both sides . I doubt it’s a cavity.