Skateboarding rolled ankle 3 weeks ago still have pain?

Ok, I rolled my ankle 3 WEEKS AGO I was trying to ollie(jump) down some 6 stairs and landed right on my ankle!!!!!!!!! and I still have pain. I have been putting ice on it evry now and then. But whenever I twist my ankle to the right it hurts. I tried doing a tricks on my skateboard almost evry week and I still feel pain. Should I buy an ankle brace. Why is it taking so long!!!!!!!! No ankle roll has lasted me this long. And will my ankle ever fully recover?? I cant go to the doctor because my mom doesnt have insurance and is unemployed.