well twisted ankle most of time is just a sprain means excessive strechin of ligaments if pain is too much take tab diclofenac 100 mg tab aftr sm food it wud be helpful just to  be sure need to take Xray both anterior and lateral view c a orthopedic surgeon nearby in morning if its sprain u might need Crepe bandage to be tied for 1 to 2 week till its alright In case of dislocation of bones or frature it has to be put in cast for lil more time or surgically wired (its very rare in such low velocity trauma so dont worry abot dis..i just told u since u shud knw dis