Hello, I Fell Off My Bike Today And Hit A

Hello,

I fell off my bike today and hit a bit awkward on my left arm. It felt like my elbow slipped out of place briefly... sounded kinda crunchy when I straightened it out the first time. Now, my forearm is tight and I can't straighten the arm with out some pain and stiffness. It's not horribly painful, no bones sticking out or blood or anything good like that. It doesn't look swollen but it's definitely not right. What would you advise as a remedy...