[cheebacheeba]

There's no way any amount of helpful information based on experience should deter you from seeking medical advice/examination.
Embarrassing I know...but this is coming from someone who's had a doctor put fingers up their ass (for a headache, weird...no? :D ) but that said afterwards I felt a lot better when I was simply advised to have slight dietary change.
Even if it's "bad news" so to speak, the earlier the better and in most cases of the ball related - well, chop one off and it's all good.
You can even get a fake ball to put in, or a replacement from a pig. Pig ball.
But in all seriousness - sooner the better one way or another - bite the bullet and go let the doctor feel up your sack, ok?
All the best.