My husband didn’t want any more children, after having been married before and having one child from that marriage... needless to say it was hellacious for him to deal with the ongoing shenanigans from his ex.
What do you do when the other half doesn’t want kids? Poke holes in the prophylactics? Ex wife did that to my husband when he was still with her... would’ve wrecked our (new and just- started ) relationship if I had tried that!!!!!
You shouldn’t have married him if you wanted children and he didn’t.
And you still want more children? If you are better than his ex he might be a bit more willing to help you with this.