Rest, ice, ibuprofen
Temorarily, you should rest the wrist, splint
it if you can, use some ice packs and perhaps take some Ibuprofen
type otc meds if you can.
If you continue to have pain, it worsens or you have concerns or other co-existing medical problems and depending on your age, any trauma history or other concern, see your pcp for evaluation and professional treatment. Be cautious!