Fertility

Hi ladies.

My partner is 35 when he was younger he had a servos sever case of mumps. It was before puberty which they say is a good thing and may have not effected fertility. Plus when he was younger the drinking and drugs where pretty big like with alot of ppl these days 😧 obviously grown out of it and none of that now. But I'm so scared I don't want to no the answer if it's bad 😢