He never washed his dick- another update

I’ve been with my husband a long time. Like, over 6 years. He’s uncircumcised. He didn’t know he was supposed to pull back the skin and wash under it, which he learned from me 2-3 years ago because I won’t give him head because it tastes nasty. He still doesn’t wash under the skin very often, and he works outside 12+ hours a day 6+ days a week. My vagina is itchy after sex and always smells weird AF, so I don’t like having sex with him. So we only bang once every week or two, even though my sex drive is high enough to go multiple times a day. I never give oral. We have been trying for a baby for 4 years and no luck. Could that be why? I’m honestly at a loss here. I have no idea how to get him to clean his penis. I can’t even be near his junk without gagging the smell is just horrible. Please help?

Update: he doesn’t have a doctor and refuses to go to one. His family isn’t from here and his mom didn’t even teach him to piss in the toilet, let alone how to wash his penis. His family are wonderful people but terrible parents (yes you can be both). They never had pediatricians. He hasn’t even been to the dentist in 4 years and before that the last time was in 3rd grade.

Update: for those asking he’s almost 25. I have offered to show him how to wash it (I was a nurse assistant for years and even finished a year of nursing school) and even described it to him multiple times but he’s super shy and doesn’t want me looking at it. I have gotten several yeast infections, and I’ve been tested for bacterial infection in the last 4 months (came back negative). He hates being in the shower together so I can’t really “play” with it in there. I’ve asked him recently if he’s been washing and he said “sometimes.” But I can tell it’s less than that. He just doesn’t care. I know it doesn’t PREVENT us from conceiving, but I was thinking it made things wacky on my end which inhibited the chances. His parents just never taught him how to be hygienic. I’ve had to teach him everything from washing his face to doing laundry. He washes his testicles and like the outside of his penis but he never pulls back the skin. I just don’t know what to do anymore.

Update: I wash myself very well at least once a day. Again, I’ve been tested multiple times and I don’t have bacterial infections. The only time we really have sex is during ovulation. The first 4 years of our relationship were long distance, so I never really noticed. We got married really quickly after we moved in together. I want to stay with him because sex isn’t everything to me. But it is important, and I just wanna figure out how to get him to be cleaner. I love him. He’s kind and generous and thoughtful. He fills up my gas tank, puts $25 a month on my Starbucks app so I have coffee before class, massages my muscles after the gym, dyes my hair for me, gives me massages at least twice a week, gets me flowers delivered to my work when I’m having a rough day.. you name it, he does it for me. He is pretty hygienic other than that. Sometimes he doesn’t shower before he lays in bed, but if he falls asleep I just wake him up and ask him to shower first and he does. This is the only hygiene issue he really has (now). He’s not perfect and neither am I. Yes he’s Mexican for those who ask. I have no idea why that matters. I just don’t know how to tell him his dick smells (and I assume tastes) icky.