Hi, I m not sure what is going on, but about 4 days ago, the right side of my jaw and under my ear started hurting. This has happened before, but it only lasted a few minutes. This pain and pressure continuted, and when I woke up the next morning, my jaw was swollen. It has been swollen ever since. I thought that it may be some kind of blockage in my sinus cavity, so I started taking some cefprozil, but my jaw is still swollen. It feels tight and there is a lot pressure. No direct pain. What could this be?