I can't believe it

I thought my partner and I were on the same page after everything we have been through the last year, we're finally having our rainbow Baby and now he doesn't want it. I'm 6 weeks 3 days and he tells me this now. Why were we trying so hard in the first place than? I am have a hard time even writing this I'm crying so hard. This baby is my life and I am not even hold him or her yet. My heart is broken.