He slept with me then walked out

I’ve been with my partner for 7 years, we’ve been trying to conceive for the last 15 months, we’ve been so ready and excited to have a baby. It’s my ovulation week. I’ll ovulate in about 5 days! So as normal, we got tonight in as we always do when we try, so we had sex, he got up straight away and dressed, jacket on, shoes on. I asked where he was going and he just looked me dead in the eye and said he was leaving, leaving me, he didn’t want to try for a baby anymore, he doesn’t want to be with me, he isn’t happy. Then he proceeded to put his headphones in full blast completely ignoring me talking to him and put all of his things in bags, started taking them out to his car and he left. Without any further explanation, he just left. I am so fucking confused and hurt. My heart is so sore. He’s blocked me from everything. I really do not understand. We were fine this morning, he actually text me when I was at work saying “remember it’s baby making week!!” And I come home, we have sex and he leaves telling me he’s never wanted a baby and he doesn’t want me anymore.

*he’s 34. We’ve lived together for 4 years. Never had any indication that he was unhappy or didn’t want me.