I get how your OH feels. It sounds like 6ou had everything planned to suit the life you want. No more working enjoying studying, have the children you want whilst your oh has to follow with your plan when he doesn't get as much satisfaction from these choices.
He was probably happy to go along at first to make 6ou happy but is now questioning whether you just see him as an enabler to have the life you want rather then seeing him as your soulmate.
He brought up the holiday as he saw it as time to spend together to relax, something to make him happy and he assumed you would to, yet all you can think of is how it gets in the way of your aim to be a mum again. It must have been really hurtful to him.
You do come across as obsessed and I do get it as I too suffered a miscarriage in a new relationship at 38 and also went into life revolving around getting pregnant again and else mattering much. But I made peace with myself in time not to let it take over. I never had that child I so desperately wanted, but 8 years on, I can honestly say it was a blessing as poking back, I don't think my marriage would have coped for various reasons I couldn't see them. I went from desperately wanting a baby at all cost to feeling grateful I didn't surpringly very quickly.
I know that your heart rules your brain at the moment but it is possible to get to the point of being genuinely happy from the gratefulness for what you have already.
Listen to your oh he is trying to tell you how he feels. If you opt to ignore it, he will feel rejected and unloved. You marriage can't be built just around what makes you happy.