HI DEAR AND WELCOME TO HCM....
dear your pains seems to be due to
varicocele....
varicocele in majority of cases,is asymptomatic,and does not cause decrease in
sperm count ....
but in some people it cause a dull,boring type of pain ,and if not treated ,may cause decrease in sperm count .....
i advise you to go for surgery,as it is hardly a 5 minutes procedure .....
wish you a very good health ...