I have a bump the size of a nickel on the right side of my head, I've had terrible headaches and nothing I take with make it go away. The pain is only on the side of the bump! Should I go to the er now or hold out until I can see my doctor I don't want to waste anyone's time

That's up to you if you feel that you should have it looked at right away then go to an er or urgent care clinic if not then go to your regular doctor