Oh OP this is so sad
I think the devil is not in the detail here- reading the whole thread the overall feeling is of control.
He decides what happens, he gets to be the man and father a child of his own, he even gets to decide when you talk about it.
His comments and lack of compassion or empathy are actually incredibly nasty.
Honestly, regardless of the outcome of this specific issue I don’t think you should stay with him. And I am not a LTB poster.
But the way he is belittling your feelings and acting frankly in such a cruel heartless manner, is not compatible with a loving relationship.
I wouldn’t want to have a child with a man so lacking in any love and care.
His is threatening you with his actions whilst refusing to explore the actual possible answer to what you both supposedly want to achieve (fertility treatment).
The only outcome of that is that he gets to control and decide and put you down in the process
This man will break you OP.
Please see what’s going on and act on it before you get so low and downtrodden that you can’t see the wood for the trees.
From what you say, you aren’t married and it potentially isn’t a very long term relationship?
This isn’t how a good man behaves OP. Really it isn’t.
Infertility is painful and devastating and can be so hard on a couple but if it triggers abusive comments and behaviour it is giving you the answers you need to get out now.