OKay, so yesterday I was training at the gym with a medicine ball. I was throwing it against the heavy bag for power training, as it bounced down off the bag, I tried to grab it and it bent my middle finger as I done so. Since then my finger is swollen by the joint and it hurts when I bend it. I can bend it reasonably okay, but I cannot make a fist due to the stiffness of the finger. It has mobility, so that's why I was unsure of it being broken. It is easily visible that it's bruised from under the skin. I did not want to go to the doctor as it's probably something I can fix myself.
I don't believe it is broken, but what do you guys think?