Last thursday I was writing a lot of notes and I got this sudden pain. My wrists still hurts, its redish, pain in palm of hand and finger pain.

Hand pain. Pain and discoloration of the hand after continuous work can be related to repetive stress syndrome. This can include tendonitis, carpal tunnel syndrome, trigger fingers, dequervains tendonitis. Give your hand a rest, try some oral anti inflammatories. If symptoms persist get checked out by a hand surgeon.
Carpal Tunnel. It could be an acute form of carpal tunnel. Carpal tunnel is when a nerve in the wrist area gets compressed. Take some nsaids, stretch wrist, and also try some ice. If no better in 2 - 3 weeks get it evaluated.