living together

I'm not sure if it's my hormones ( I'm expecting) but since I've been pregnant my SO has been very lazy with me which includes us having sex. Sometimes I will really want to have sex with him so I'll gentle touch his back , just trying to set a mood in for him doesn't work he will just complain saying he is too weak. So my partner & I are both managers for separate companies, we also make our own schedules as well. So lately he's been putting himself to work at 6:30am a lot ( I see his schedules because thats how I make my own schedule so we can swap the baby sitting with my son) so if he is working that certain shift he has to wake up at 4am to take the earliest train possible. So with him having that same schedule over & over ( which theres no real reason to schedule himself like that if I can rotate my shifts so he can catch a break) he complains to me that he is too tired for anything. & when ever he lays down on our bed he automatically falls asleep. It drives me nuts because he has to also remember he has someone at home too that is important & who needs love & attention. I've spoken to him about it & he says he will schedule himself to work later hours since his constant complaining & neglect towards me has been pushing me away & he rather not have us fight when he can solve the issue before hand. But in my eyes I just feel he only cares about himself & says these things to just shut me up basically, I'm not sure if its me being hormonal but at times I just want to leave because I do feel single at times by how little affection he shows me when he is at home. This has been going on for a month & yes I kind of do want a bit more attention because I've been so emotional I want him to show me he is here for me , not just fall asleep as soon as he gets home.