Boyfriend and pregnancy

So I’m 25 weeks pregnant and I have three appointment a month and I only ask my boyfriend to come to one the main one where they check the growth and everything with the baby and he says he likes going but don’t mind if he didn’t at all either that it would not bother him that he will get to see the baby once she is out and the rest of his life . I don’t know if it’s just pregnancy hormones or what but I feel like he really doesn’t care about my pregnancy and I feel like he isn’t excited at all about it . Has any of you guys had this problem with your husband or boyfriends?