For the past three days, I have been having intense pain in the back of my mouth on both the upper and lower left side. It's like on the part where the and cheeks connect. Now, my neck is sore and I can't open my mouth all the way. It's very hard for me to eat and to get to sleep as well because of the pain. The pain radiates up to my left ear. I can't see cavity in any of my teeth. I've always had great dental hygiene. I brush,floss and rinse with mouth wash regularly. I visit my dentist twice a year.
Any ideas on what is causing the pain? The right side of my jaw, teeth and mouth don't hurt at all. I am quite worried about this because this has never happened to me before. Please help!
I would be thankful for your answers!