You really should be wearing wrist braces. You can get them in the health and beauty aids section of any mass merchandiser. They are about $6 to $10 for decent ones. They even make them in black now so they look way cooler than the old beige ones.
To reduce the swelling and pain on the hand, you should keep elevating your hand. Wearing gloves and massaging the hands would also assist in reducing the pain. Consider drinking at least 64 oz. of water daily.