I Have Had Pain On The Left Side Of My

I have had pain on the left side of my tongue, mouth and throat the past couple of days. At first I thought it was a sore throat. I usually suck on a piece of peppermint to ease sore throat pain. When I did, I noticed that the pain was on the left side of my tongue and throat. I received a bridge on the upper left side a couple of months ago. I notice that the sore area of my tongue lies against it. Could I be having an allergic reaction to the bridge or could it be due to another cause?