dude same thing happened to me when i was golfing once...like i had to walk werid and i jus felt my my ball ripped and then like 2 days later it was gone.
wait it out for a lil. in the morning they should be fine. like it hurts when you put pressure on them right? and when you walk and they hit your leg or somethign. yeah its happened to me before and i waited for like a day or so and it went away.
im pretty sur you brused your ballsack man. Excess yo-yoing of the balls can do that. Its why you wear the boxerbriefs to hold up the boys. That happened to me hitting the pipe in tremblant.My balls you just drop down and hit me back in my "cuzif." Fucking sore like hell.