Thanks for your thorough answers.

I've seen four urologists in a capital city and none of them did a culture test, save the prostate fluid sample. Perhaps they don't offer the culture test because of my insurance? Do I have to ask for it?

Here is a link to pictures of a large varicocele:

http://www.malereproduction.com/14_varicocele.html

Mine was relatively similar. I have an inguinal (lower belly) scar that possibly causes nerve damage pain.