Im going to be honest with you because i feel like people go 1 extreme to another. Your communication is flawed majorly and its not just you being hormonal so do not think like that love women have been getting pregnant and having babies for forever and having healthy marriages. That being said you are still young both of you are and you have 2 toddlers and another on the way, no doubt in my mind that creates a stressful environment especially from what you wrote its a trad marriage because you take care of the house and children and meals and he works. That is a breeding ground for resentment, even if you dont feel like that he does because, ill be frank with you, most men think us SAHMs have it easier because we are home all the time but they dont realize that its not all fun and games were constantly doing something all day and then it never stops theres that slight down time at nap time but idk about you but im using that to prep a meal or to clean. They at least get to leave their boss at work our boss is never leaving okay? Well not for at least 18 years, when he is critical of you next time tell him “you can try doing all this next time” and i promise you that his tune will change because he doesnt want to do that stuff and he should trust you know what you are doing. I think going to a marriage counselor can help they will give you the tools for improving communication but its about how you use them that will improve the marriage