Am I wrong for feeling this way? Long story/rant

Okay so my BD and I are trying to figure out life together. It’s a been long rocky road for us. I thought when we found out we were pregnant he’d grow up and stop being selfish. I’ve had an eating disorder for the past 4 years (it’s still off and on) so it’s very DIFFICULT for me to have a comfort food/snack. Part of my eating disorder most food looks and sounds disgusting I usually force feed myself so I can get some nutrients. (I’m in therapy for it and for a bunch of other reasons). With that being said picking out groceries at the supermarket is a living hell and I can feel myself mentally shutting down due to feeling so overwhelmed with choices. Now my BD and I have been together for almost 2 years. He knows my eating disorder, we’ve lived together for almost a whole year so I feel like he should know what I like to have around the house for dinner and like snacks that I could possibly wanna eat since he brags about him paying attention to me when I don’t even notice. But the past few times I have sent him to the store so I can stay home and not feel overwhelmed and overstimulated with picking out groceries and having our infant with us too. He has not even gotten any groceries that I like or would care or would have interest in eating… I even sent him a few ideas for at least snacks for the house that I’d most likely eat if I’m able to force myself to eat. And still nothing…. Idk what to do… when I talk about getting groceries delivered he gets upset and tells me not to and he’ll go get the things from the store even though he already went this week. So I suggested to him to stay home with our baby and I’ll go to store and get food I’ll eat and you can pay me back if you want not required or send me with your card. Immediately shot down, and I’m sitting here thinking…. Why not? I’d rather go to a store and not feel overwhelmed and overstimulated because when we all go together it ends up in disaster I end up leaving the store with our baby and wait in the car for him to finish up shopping and gets nothing on the list… idk am I wrong feeling invalidated to the point where it’s building up MORE resentment towards him? Or that he’s selfish and I should just get groceries delivered regardless what he says?