Hi! Does anyone here have TMJ? How did it start? I am a life long tooth grinder when I sleep but I don't think I've gotten worse recently. However this morning I woke up and the right side of my face feels like I was sucker punched!

My jaw hurts and the pain is going up to my ear both in front of it and behind it. I cannot put my back teeth together on that side without it hurting badly. I took some OTC pain killers and it didn't help much at all. I have been googling jaw/ear pain all morning and all I can find is TMJ. Is it possible to just wake up one day and 'have it'? I have NO idea how this works or what to do. I do not hear any popping or cracking noises from my jaw. Does it go away on its own? Should I see a doctor? Is there something else this pain could be from? My teeth are fine, I have minor to no allergies and Ive NEVER have a sinus infection in my life (not that I can't get one but I highly doubt I have one).
Any other ideas or any info you guys have on TMJ would be appreciated.