Why cant I just not suck at being a wife?

Let me start by saying I am a stay at home mom, and my husband is the one who works, and he usually works 730-6 Monday through Friday, and 8-1 every other Saturday. So I never ask him to do anything really, besides take our two dogs out once right before he goes to bed because it's easier for him (they're stronger than me and know it). Not even help with our 18 month old unless I cant for whatever reason, which is REALLY REALLY REALLY rare. I dont ask him to do anything with us even - whether he wants to go play basketball with his friends or be on his phone or game system from time he gets off till he goes to bed...

But a couple days ago, I did ask him to bring our laundry basket downstairs because our room is upstairs, and I'm 35 weeks pregnant and I've already fell down the stairs carrying our son once so I am trying to not do that again. He came home and asked if laundry got done.. I said no because I had asked him to bring it down but he didnt... he got mad and started getting an attitude and yelling, saying I should've threw the clothes downstairs and then just took the basket down and put them back in. I apologized. He is still pissed...

I'm 35 weeks pregnant, and upset, and cry over little things. So I'm crying because I feel like a shit wife and he asks me what's wrong, but still angry. I say it's nothing because I dont want to make it worse. Well, that just makes it worse. Evidently hes not playing this game and hes not going to keep asking. I didnt want him to keep asking.

Why cant I just stop sucking as a wife? When will I get it right? Weve been married over two years now, but together over ten years.

I just want to be good enough... I try so hard..