Thanks for writing to us.
Since the movements at the wrist are painless, a fracture
is not likely. The soft tissue
swelling is compressing the nerve
which is responsible for the numbness
You can keep your hand immobilized, do a hot fomentation, use a crepe bandage for symptomatic relief. In case the symptoms persist, an MRI may be a better option.
I hope this information has been both informative and helpful for you.
Dr. Praveen Tayal