Losing interest in SO?

Is this normal? I felt this way right before I got pregnant. But now it feels like since I've gotten pregnant its gotten so much worse. Our conception date was on our honeymoon and I know that the first year of marriage is supposedly the hardest. I do love him. I love him very much. But I'm not IN love with him. It's not that I don't want to be. I'm just not.. It's horribly stressful and for the time being we are separated hoping space with give some type of relief. I'm really hoping it changes once our son gets here but I guess only time can tell. Anyone ever experienced this? It makes me feel so horrible. Definitely feeling like a shitty person.. :(