Broken toe. what to do about it, and how to know if its broken?

well at about 11 this morning i ran my foot into the door frame, it was more my pinky toe that really hurts when i walk.... someone told me it could be broken, but im really not sure. i know bruising is a symptom, but how long after you stub your toe should it bruise if its really broken? Thanks!! (oh and what should i do to cut down the pain?) thanks again