Lump on neck

I was eatin some food and all of a sudden I got a pain in my neck almost behind my ear. Like when you eat something sour. A couple seconds later it turned into a big lump. I started sweating really bad and started feeling sick (possibly from worrying). It has been a good 30 minutes and its still there. Now my arm pit has a pain in it. What could this be and is it serious? Thank you

Please consult a medical professional for an answer to this question. Thread closed.

Gfactor, General Questions Moderator