NEEDING ADVICE!!

Sorry but this is gonna be long lol So I went to my OB to follow up on all my tests for fertility.  She did a biopsy on my endometrium, checked my hormones, did ultra sounds, etc....besides me having an irregular period, she said everything seems to be working fine.  Being that we're going on 2.5 years of TTC, I never thought to have my husband checked being that he has 2 kids from a previous relationship.  However, the other night I was giving him a hand/bj and I noticed that when he came it was damn near clear, almost watery.......not the regular cloudy white 🤔 now I'm not a doctor or anything but I'm pretty sure it's not supposed to be like that.  When I suggested we go to see a urologist or see my fertility doctor together he blew up saying: I know my shits working! Not sure if it's a macho man thing or whatever but I guess I'm just looking for advice on how to coax him into going.  Any help is appreciated please ladies and/or gents!