I'm currently 26 weeks pregnant and work 16 hours a week, which is split over 3 days. OH works full time, and we have 2yo son. I've always done everything with only working part time such as washing, cleaning and cooking. Recently I've been struggling more as I'm just so tired, and constantly battling back pains. I've ask OH if he can help our more with housework and he thinks I'm been unreasonable. I ask him if simple tasks could be done whilst I'm working and I always come home to nothing done or an excuse that he didn't have time because of our demanding 2yo. Which my response is, "yes so do I when you're working but I still get things done", he's always moaning I get behind on washing but does nothing to help me. I never have the energy to do washing on days I work as I work in retail and on my feet for the whole time I work. I just feel really down and stressed about it because I thought he'd like to help me out now I'm struggling but he still can't see past the fact that I only work part time so should be doing everything 
I don't know maybe I am being a bit selfish because I know he works really hard for us and does get tired too. I'm not sure, would this bother anyone else?