One side of my jaw has been soooooo sore the past week. I have difficulty chewing. The pain is just on one side.

I know that since being on lexapro I clench my jaw more at night and I tried getting a mouth guard, but it was too big. I have a small mouth so it is hard to find one that fits. They are also around $40 in my local pharmacy so I don't want to keep spending it.

I tried icing on and off, massaging the knotted muscle, and taking ibuprofin. All help temporarily but then it gets sore again ... but again only on one side.

Any suggestions?? I don't have dental insurance but I am pretty sure it is a muscle knot because I can feel it and it feels like all my other muscle knots.