The wrist is a very complex structure (I'm not teaching you to suck eggs here) however the best thing you can do is see your GP as he will be able to perform tests to see whether it is musculagenic, myogenic, or neurogenic, until this is done then people herecan only assume what it could be?

What was the mechanism of inury
What type of pain is it?
Is it with any weight?
Pins and needles?

The list is endless

Good luck, next stop GP

Regards