Go and go quickly. I am sure that all will be ok, however it is the part of a mans body that you can't take a risk with. A bit like breasts on a woman.
I myself am having some horrible problems with my testicles and all the glands that surround them. I am presently off work and my sick pay runs out Friday. Until I have been given every antibiotic that has been invented I can not be referred to the urologist. When I am referred to him I will expect to waite for weeks and even months to see him. When I see him he will book me in for a scan. I will then be put on a long waiting list for this. This will probably go on for months and months. Yes, you have guessed it, I live in the UK. At least you have a system that works, and don't think ours is cheap, we pay a fortune in something called national insurance.
Good luck and get yourself down the doctors