Hello,         You may have these symptoms because of teething or eruption of the wisdom tooth. I guess it should be the erupted upper tooth rubbing against the gum surrounding the lower erupting wisdom tooth. Treatment depends on the space available in your mouth for the eruption of the tooth .So visit a nearby dentist for further management.

U have not specified which tooth but most commonly the upper last tooth usually irritates the lower gums when the lower teeth are erupting U need to visit the dentist to get the upper tooth trimmed or may be extracted depending upon the condition

looks like problem is with the wisdom tooth either it can be due to last tooth which is trying to erupt n not getting proper space lading to problem or it can b the upper wisdom tooth hitting the lower gums plz visit your nearby dentist asap