Not sure what to say

My husband has been micromanaging me and I'm pregnant and it's starting to affect me. We have a toddler and he's always been a smart Alec and I'm trying really hard. But today be criticized me because our son didn't take a nap but I need to do it because he doesn't stay in the bed when I put him down for a nap. So I tried different methods and didn't ask for his help. I gave it my all and to him even if he wasn't there. It wasn't good enough. Then I went to the grocery store to get stuff for dinner and I gave my son maybe 7 cheerios to distract him so I can make him dinner because he's clingy with me and my husband didn't even ask and served him a bowl of cereal with milk and he started clscokding me as to why I gave him cereal and that he gave him a snack half an hour ago. I didn't know. I was at the store. Then he kept going. My son always eats his food. He just kept saying it doesn't make sense to me. You're the one that just gave him the big bowl of cereal and milk while I was busy making him dinner and didn't ask me. I'm tired, hormonal and distracted. He was busy playing a dumb game on his phone and I let him be. I'm so frustrated because I don't want to be told that I'm doing this wrong and I don't make sense or I don't try hard. When somedays are off days and he loves to point out bad days. We could have 10 great days but one bad thing happens on the 11th day and all of sudden he wants to be upset with me. I'm just not sure how to respond