What to do?

I’m 22 weeks pregnant with my first baby and over the past month or two I feel like I no longer have strong feelings for my partner. (I don’t mean like he gets on my nerves, I mean like genuinely don’t have those feelings for him anymore) I don’t feel like being around him or even talking to him. When he writes me I have no urge to respond. I’m more repulsed by the thought of him. Is it just hormones or is it something that could be a permanent thing.