Hi ! For your epididymo orchitis, proper rest with scrotal support along with anti biotics and anti inflammatory drugs will relieve you. However, varicocele
needs to be taken care of. It is not always that it causes sterility
though it can. I will advise you to go for a semen analysis
on consultation with your treating physician. If it is normal with normal sperm count
and motility, then there is not of much concern. However, the proper line of treatment (surgery or not) will depend on how much discomfort you feel, and what are the findings on clinical examination. So you can go for the opinion of a Urologist
for the same. Wish you an early recovery.