It would be in your best interest to get your ankle evaluated. No two ankle sprains are truly the same and proper care insures optimum function in the future. Please look up a doctor in your area.
Try getting an aircast, rest and ice, if not better and X-ray is negative, then an MRI is warranted.
Kathleen Neuhoff, DPM
Further diagnostic testing such as an x-ray to rule out fracture or dislocation that may give information regarding ligament tear in conjunction to a doctor evaluating the anatomic structures to see where the pain and swelling corresponds to the anatomic structures to see if a pneumatic boot cast or even a weight bearing or non weight bearing below the knee cast is necessary. However If there is still pain with weight bearing a MRI may be necessary before you can put weight on the area to see if surgery is indicated prior to weight bearing as premature weight bearing may ensure the conservative care is unsuccessful and only surgery may provide he necessary alignment and function that you may want and need to regain full function.