Hurt forearm playing softball

[Gators]

Was playing at Church Saturday, and on a foul ball, the inside of my forearm hurt like a mofo. today at the very inside of my forearm at the elbow i have a nice knot, considerably larger than my unhurt arm, and it hurts like hell right at the crease in my arm, where my upper arm meets forearm. Any insight into this, anyone had similar injuries? Not sure if i just pulled it bad, or it it's partially torn, it really hurts to try adn straighten my arm out. to cut too the chase, wondering about continuing to lift if pain is tolerable.