While I think it's normal for him to be a bit emotional about all of this I think he's going about it the wrong way (when it comes to discussing it with you) and being pretty insensitive.
My work has been great about my pregnancy (even when I took a couple days off when I w as in the hospital) so they know if im running to the bathroom during work hours that its because im getting sick and not because I don't want to work. Would your work be this accomodating too? I know today alone I went to throw up at least 6 times in under 3 hours!
Other then that just do your best, thats all he can ask for. Maybe sit down with him and tell him how your feeling and that you definitely want to keep the house clean and all that but that your feeling extremely ill and don't have the energy to do it. Maybe he could help you out more too.
Don't worry about feeling overly emotional haha Sometimes I think i'm going absolutely crazy. I go from super b*tchy, to happy, to crying all within an hour. I feel like such a drag sometimes because he always wants me to go out with him and I just don't feel well enough to do it.
Hang in there! In week 10 the placenta takes over the majority of the hormone production so your morning sickness and mood swings should start to calm down a bit

(I'm in week 10 now and still waiting for this to kick in though haha. And sorry about the book I just wrote but I also can't sleep right now!)