I have a sprained wrist that isnt getting any better.its been sprained for 3 mon. i got xrays done so its not broken so i don't know why it wont heal?

An exam followed by : An appropriately selected xray is a good start. The wrist is comlex and "sprains" arent necessarily treated all the same as the injury can be mild or complex even with a negative x-ray. A fracture can differ in its appearance just by varying the view of the x-ray so while a standard traum series of xrays helps rule out an obvious fracture there are many injuries that need special views or studi.