The fall may result in sprain
of the foot bone and you should have the x-ray of the foot joint done to know the underlying pathology.
The fracture if present may need immobilisation and cast for 4-6 weeks duration.The anti-inflammatory drugs like motrin
, advil etc may also be required to control the pain, redness
You should have the physical examination done by doctor and x-ray and start the timely treatment.