Hi rainbowmoon. I'm no doctor so I can't tell you exactly what's wrong with you, but I have had some experience in this area. People in my family almost all suffer with TMJ disorder (temporal mandibular joint - aka jaw). So half the time my jaw joint is all swollen, clicks, is sore, and there are even times I can't open my mouth all the way. The best remedy for me immediately is to take some ibuprofen (3 of 'em) and that will take the swelling down. But in the long term you should talk to your GP or your dentist, because things may really be out of alignment (as you say they feel). Have you felt stressed lately? Sometimes you can clench your teeth in your sleep and even grind them, which will make your jaw act up (whether or not there is actually anything mechanically wrong with it). Good luck.