If i was you, i would go to the Dr. asap! Itīs not like you can afford to loose your balls! Cīmon why take any risks, when it comes to matters of the "down under department" it might not be anything, but get it checked immediately. If something BAD has happened, the sooner you get it fixed the better! In worst case scenario... I donīt even want to think about it...
Just get to the doc and pull your head out of your ass!
All the best dude...