Is My Ankle Sprained, Fractured, or Broken?

Just a little over one day ago, I was trying to jump down about 5 stairs and tripped, and landed on my right ankle. All of my body weight was on it and it twisted inwards. I haven't seen a doctor yet, but I'm planning on within a day or so. Compared to when I had a 2nd degree sprain in the same ankle, this recent one isn't nearly as bad. However this one is painful to bend, twist, or even move my toes. My whole foot and leg up to my knee will get swollen and turn reddish - purple. I can walk on it, but I can't put to much weight or bend it in any way. What's wrong with my ankle? By the way... I'm 15 years old, 6 foot 2 inches, and 200 pounds.