Hello There,
Mumps is one of the reasons which may cause infertility in male but.. we need the present condition of your partner like semen analysis test and USG Scrotum/ Groin Region, Kindly if u made it update here.. Then You can contact me personally, Tq
Next Steps
Semen Analysis with 4 to 5 days of Abstinence and USG Scan of Scrotum must be done as initial investigations..
Health Tips
Advised to Wear Loose Under Garments.. And Avoid hot water bath