Fever in 2010. antibioitics for few days (not long enough). since then: idiopathic pain in ears/jaw, idiopathic pericarditis in 2013. still tired/dizzy. jaw/ears hurt mostly when i hav a cold. lyme's?

Difficult to tell: You need to consult with an infectious diseases expert in your area and have serology performed after full history and exam. Using groups of vague ill-defined symptoms to try and pinpoint a specific entity like lyme disease is not the means to approach this. Sounds actually as if you may have a problem with chronic sinus or middle ear infection. See a doctor.

Good thought : Reasonable to test for lyme. You may have tmj. A way to tell is to open and close the jaw with a finger placed in the TMJ socket which is roughly the pocket created when one opens the mouth and places a finger directly in front of the ear canal right at the level of the sideburns. Softer foods, warm compresses and Motrin should help. Avoid gum chewing. Other option is migraine or mono.