There are a lot of replies but I would get a drug store wrist splint and wear it as much as you can, especially at night. I have a wrist issue from an old injury and wake up a lot at night with numbness in fingers and the splint helps a lot at night. You probably irritated a nerve. It needs a bit of rest, imho. I would follow up with a dr when you can but my gut tells me some time and rest will be all it needs.