Help with elbow pain?? please help!?

So I'm a cheerleader, both competitively and in school. A couple weeks ago, I noticed my elbow would hurt a little every time I tumbled, but I didn't think much of it. It progressively got worse, but I never got a chance to give it rest. Last week, I had cheer camp and had to undergo a LOT of tumbling, basing stunts, and other activities that really put a lot of pressure on my elbow and made it hurt a lot worse, but I couldn't just stop tumbling and stunting in the middle of cheer camp cause my team needed me. Anyways, I'm hoping that someone here can tell me why i'm having this pain and what I can do about it because it's really starting to be unbearable. It's been 5 days since camp ended and the pain has not gone away. It's a radiating, aching kind of pain, and it hurts even when I don't move it at all. I literally cannot turn my arm over (to where my palm is facing up) or extend it fully. It hurts to do my hair, put on makeup, eat, or do anything with it :( I know that it was caused by tumbling, because thats when it hurts the worst, but i have no idea why because i have been cheering for years and have never had this problem. help please! i need to get back to cheering as soon as possible!