Ankle Sprain or broken?

I am unsure if my ankle is sprained of broken or sprained. I am able to put some weight on it but very painfully and I prefer not to put pressure on it. I did it two days ago and I did not feel extreme pain until today. It is very swollen. It happened when I jumped and my ankle twisted under my leg. I did not hear anything as to it was very noisy in the place I was. I have had an ace bandage on it but it is still very painfull even when I do not move it. PLease help.