My ankle is worse then it was a week ago wtf?

i sprained and torn a ligament in my foot about a week ago , at first the pain was bad but i could still kinda walk on it , it was allways cold and numbish, and it looks like a zombie bit my foot and the only way i can make it stop to were im not crying in pain is too elevated but it still hurts really bad , but everytime i take it down and stand up or put it towords the ground it feels like blood rushs too it fast and then get stuck like its going too pop its soo painfull i scream out bad words it feels hot too the touch and there is this one spot i can even look at with out it hurting *whats should i do*