so i played guitar repeatedly for a lot of time and my hands (and wrists a little bit) started hurting. this was nearly 3 weeks ago, and ive been resting my hands since then. they hurt less now, and im trying not to use the computer much because typing hurts them. but recently my hands have started feeling tight/ stiff whenever i open them or clench them. whats this about? are they healing slowly? i dont notice much improvement day to day. is there anything i can do to speed up the healing?

thank you