I don't know if anyone else has this problem with their so but my husband doesn't seem to understand what I'm going through ( how tired I am, how emotional and hormonal I am. . . . ) "Being pregnant is not an excuse" to be "nasty" to him. I ask him to shovel the porch steps so I don't fall but he doesn't get how important it is that I don't fall down the stairs. 
I'm so frustrated with his lack of understanding and worry he won't help me the farther I go along when I really need his help. 
                 
                
Re: Husband has no understanding
Just hang in there and figure out what makes him tick that will light a fire under his butt to help you.
He's gotten better but we are still bickering non stop due to his man brain- I lost it the other day when I came home and he was using my decorative hand towel to scrub a casserole dish!!! I over reacted and then he started huffing and puffing about how he was just trying to help.
Ohhhhh we can't win! Lol god willing my second trimester gives me more patience
Sometimes I find it funny the things women know and men don't about certain things almost naturally. (And vice versa of course!)
I was getting so fed up with with explaining and asking and not getting anything back.
It literally took me to go super hormonal crazy ass on him! I sat on the floor and sobbed about how my body feels, how I feel ect.
And I really think it finally sunk in! I mean, I probably got myself far too worked up which I probably shouldn't have done for baby's sake, but now he asks me if I need anything from the shop, If I want a drink, anything to eat or if any chores need doing.
My point is, maybe try doing the crazy thing. There's only so many times you can ask or shout at them.
Big hugs girl! Stay strong xx