How To Treat Swollen Node On Jaws?

I have a swollen node by where my jaw connects and in my mouth in between my gums and cheek. I also have dull pain in my back lower right teeth. My jaw line has some swelling or drainage as well. All of this is only on the right side of my face. Also when I bend over I get a strong pressure/headache by my cheek bone/ear. My headaches all seem to be on the right side lately. Do you know what this could be?