'im in a air cast on crutches and spraind my ankle. Negative xrays but they said there's a space between two bones. See ortho weds what will they do?

Evaluate. They will look at all the info and decide if conservative care is continued or if surgery is necessary.
ankle sprain. Sounds like what they call a high ankle sprain. This requires extra care, such as a boot cast for at least six weeks. Expect more aggressive immobilization.