Suggest Treatment For Swelling In My Ankle

I sprained my ankle on Thursday morning, the bruising is coming out, I have strapped it up and use crutches to help walk where I can, but am trying to keep my leg raised. The swelling is not going down and my toes are really cold and feel a bit numb, I have not seen a doctor. I fell off a curb and stumbled to get my footing. both sides of my ankle is bruised not just one side. Do you think it is just a sprin or should I have it checked out incase I have a facture?