Partner not wanting a baby

Me and my partner have been ttc for around 5 years with 4 losses. We got our recurrent miscarriage testing back which showed I had a blood clotting disorder which they think could be the issue. Our last miscarriage was in 2019 and from then we've had one chemical. We were looking at pursuing <a href="https://glowing.com/glow-fertility-program">ivf</a> and I recently got news today that I'd be getting some money which would leave us able to do the <a href="https://glowing.com/glow-fertility-program">ivf</a> a lot sooner than we thought and when I told him he was sat beside our puppy and said "oh I don't think chase would like another sibling" I've tried to talk about it as If this isn't what he wants I'd rather end it here because I'm certain in what I want. I'm so confused, angry and hurt.