My jaw constantly clicks whenever i open my mouth?

about 3years ago i had braces for about a year, and 4 teeth pulled out, when i got my braces off my jaw constantly clicked whenever i open my mouth, and its really annoying, is it lob sided or something how can i stop it.. and also, the other day it clicked and now the right side of my jaw really hurts like its been punched or something its been like this for a couple of days..what do i do? will it ever go away