Arguing but want to try for another baby

Just posting here as I have no one else to speak to! My husband and I haven’t been in a great place recently. We have a 15 month old son and I would love to have another child (or children) if we’re so blessed. I really want to try for another baby - not to fix the relationship or “trap” my husband or whatever, but because I would love to have another child, whether or not things work out with my husband and whether or not I would have to raise them on my own.

I don’t know if I’m crazy, but I just needed to get it off my chest!

Edit: I have tried everything to work on my marriage and I am not giving up on it yet, but my husband hasn’t had a conversation with me in over a month. He won’t go to couples counseling. He will only speak to our son or talk to me in relation to our son. He still wants to have sex and we had previously spoken about trying for another baby this summer. I have bought presents and cards and made plans for Father’s Day this weekend, and I am trying my hardest to reconcile. He works away from home 3-4 days a week as it is, and I can raise our son on my own those days. We don’t share finances and so I already pay for everything that our son needs with my own money. If we do eventually separate, I wouldn’t ever be in another relationship, as my husband doesn’t believe in divorce and I would never ask him to do that (we would separate but not legally divorce). I do hope that our marriage works out and I have told him that multiple times, I still tell him that I love him every day (because I do) and he hasn’t told me that he loves me in months. I have asked him whether or not he wants to work on our marriage and he says that he doesn’t know if he does or not, that he only cares about our son. I would rather that our son not be an only child and I know that my husband feels the same (as he has said it before) so this could be our only chance to have another baby. I would never keep my husband away from our son (or any other future children), he is a good father.