Is my wrist broken or sprained or ok?

ok, i was sledding and i was going like 20 mph and i hit a stone step thing on my wrist and it's been 3 days and i cant really move it. it really hurts to write and i cant use utensils or else it really hurts. I cant make a basketball shot for my life cuz it hurts so bad to bend my hand back. should i see a doctor? i dont know if its broken or sprained cuz there's not much swelling and it looks like usual but it feels so....bad! is it broken?