Had Levaquin Before and Fine, 3rd Course and Jaw Is TIGHT

I am a fine and healthy 28 year old female (will admit I'm overweight). I was prescribed 500mg Levaquin back in January for pneumonia for a 5 day stint, took it and was fine. Turned out the pneumonia was from a lung infection that wouldn't go away (which later was found to be caused by Staph) and was given a second course by my pulmonary doc, this time 750mg for 14 days. After that round I was fine. Well, we didn't discover that my infection was from Staph until mid April, and after the Amoxicilin didn't totally knock it out, I was given 500mg of Levaquin for 7 days (didn't work anyway). Well with this course, since I took it I've noticed the left side of my jaw locking up and being VERY tight muscle wise. The only thing different in my routine is the medicine. Calling the doc tomorrow if it isn't better. This is probably the worst pain I've had in a while, and the worst side effect I've ever had! (including the tachycarida I got with bactrim!) Not a good drug... Hopefully the pain will go away soon!!!