I Fell While Running, And Bent My Middle Finger And

I fell while running, and bent my middle finger and ring finger. After I got up I checked to see if I could close my fingers in a fist, which was possible. But after a few hours inflammation and bruising set in, in the middle knuckles of both fingers. I could not make a fist toward the end of the day, and could barely bend them half way toward making a fist. I have provided RICE throughout the week, and now being exactly 7 days later, there is still some bruising, but I cannot close my fingers to make a fist. Is it possible that a minor sprain like this could last this long?