Husband is acting more distant the closer we get??

All through my pregnancy he has been AMAZING! He has picked up the slack when I have been super sick and when I got put on bed rest. He was always so comforting and super sweet up until this last month! He seems to get annoyed now when I can’t get as much done during the day ( mind you I’m on bed rest) and I am still getting really sick all the time and now it seems like he doesn’t care, before he would jump up with me and hold my hair ect. Now he doesn’t even bat an eye and just ask after “you good” this is the time I need him more than ever because being on bed rest and being so sick and in so much pain all the time is really making me depressed! I’ve tried talking to him about it and all he says is things like “are you serious” or “this again”. I never nag him about it but when he asks what’s wrong I try to tell him and he just doesn’t listen. Also it’s not like me not being able to work is putting to much stress on him becAuse I actually make more than him a month because I am a disabled army veteran. I know this sounds silly but I just wish my mom was here to make me feel better and take care of me and make me feel okay 😞😞 sorry about the long rant I just had to get it out