Surely if you are alone with someone then you are alone!
As you both work then it is only fair that your husband helps out at home (irrespective of whether you have Crohns or not-and doubly so because of the flair)
If your husband wants a baby (you don't express how you feel about having one ?!) then he is going to have to appreciate that he is going to have to up his game a bit, you are putting in a huge amount of effort for something that he wants-what's he doing to contribute(barring the obvious )?
I really would seriously consider if you want to start a family because tbh you don't sound sure that you actually want to stay in a relationship with him.
Fully appreciate that some men are not so hot on emotional support so I think mum would be a good person to turn to for that.