Thanks for your query.
I will try my best to provide you with best possible professional recommendations to your questions.
As you have children that means your count was normal. As you have mentioned that your sperm count
is nil it indicate towards obstruction. Obstruction in vas, which you have not mentioned.
It is better to correct the hernia
. if that is responsible for causing the obstruction.
Yet again, I do hope that you have found something helpful and I will be glad to answer any further query.