Varicocele and male infertility

Sarah • Mom of 2 (ages 14&11). TTC #3 since Jan 2014 with new hubby (his first). #1 miscarriage November 2015 :(
Hello lovelies!
​Seems there's tons of posts about our own fertility battles but not much on the battles we fight for/with our hubbies!
​My OH has been diagnosed with Varicocele and has first appt with urologist next week. I'm excited to finally get some answers and ask questions. 
​Just wondering if any of you have gone through this with your men and if you can offer any support/wisdom?
​I'm trying to do my research and making a list of questions to ask to get the most out of the appt. 
​Your input / experiences are most welcomed! :)