Hard Bump Behind Right Ear?

I noticed about a week ago that I have a hard bump (like a bony bump not like a pimple bump) right behind my right ear (its behind the lower ear even with about the top of my earlobe). Like I said its not like a pimple bump...it literally feels like i have a bump on the bone there. It hurts when I put mild pressure on it. I haven't had any ear infections in a couple of years so I am pretty sure that ear infections aren't any part of the problem. However, I am fighting allergies right now....could it have anything to do with this? Also I noticed a few days ago that my upper neck has been sore on the right side too but I havent noticed any bumps...just soreness. Along with terrible headaches. Could all of this be related in any way? (I don't usually get headaches...maybe a few a year total and never before has my head hurt with allergies or anything so i dont know... ) Any help would be greatly appreciated.