Husband issues

Lately it's been like living with two different men. Yesterday he was so kind and loving. He went out and bought things for me, and when he came back and I couldn't eat it he went back out again for me. He nicely asked me to order something for him online and was thankful when I did. But today he's a totally different person. We have a 4 year old son together. I barely slept last night due to nausea and headache, and all I want is for one hour to myself to sleep. Nope, he doesn't seem happy with it. He says all kids make noise, which is true, but would it really hurt him to take our little boy out for a while, or even keep him occupied downstairs? I was with him all morning keeping him occupied upstairs because we had someone coming to fit our new cable and Internet up and I felt so sick the whole time, but it was just something that needed doing so I did it. I asked him if he could feed the cats as the smell of their food makes me gag at the moment and got asked 'why don't you do it?'.  After 8 miscarriages I'm naturally scared of losing this baby too. I told him I've been told to take it easy and get as much rest as possible but I can't when he's in this kind of mood. I asked if he wants he can come to my next appointment and have the specialist tell him herself so he can understand and he shouted at me that he does ****ing understand! I don't understand how he could be so loving yesterday and so mean today :(