Don't move or I'll cut it off!

About a week or two ago, my elbow was hurting me pretty badly. It was brief here and there, and Bill told me it must be a pinched nerve. As of yesterday, the "here and there" slight pain has turned into non-stop intense pain. It hurts to press my hand down, it hurts when i pull up, hurts to reach behind me, hurts to carry things, and I can not bend it more than 2 degrees, it hurts to type, my hand and shoulder hurt by association....basically my entire left arm is useless. holy crap. Am I that old already? I am already falling apart and complaining about ailments.

UPDATE: my mom said it could be tennis elbow. chicken crap.