Boyfriend issue plus pregnancy!

I have a kidney infection, we have 3 kids 4,3 and 10 months. This pregnancy was not planned I'm 17 weeks 4 days.  But with the infection it hurts to move and because of pain when I do move I feel very sick. Our kid made a mess and he took him upstairs and I told I would be there in a min. He starts yelling because I didn't rush. But I can't because of pain. He still expects me to do everything and I can't. I tell him I hurt and he just ignores it.