It sounds like you have chosen a job that has a lot of demands in terms of out of state travel and a great deal of intensity. Maybe looking for a different position would be a consideration.
You *shouldn't* handle all the sick days etc.. if you are both working, he needs to manage some of those. If he is not willing to, and your distress is at a lack of support from HIM- looking for his parents to fill in the gaps isn't likely to help.
You need to figure out how to manage it yourself, and it sounds like finding some paid childcare and housekeeping would help. Your pain and frustration are very clear, and you owe it to yourself to find some support instead of simply wishing it were there.
Two weeks is nothing! I'm sorry. It's just not!
DH refuses to hire housekeeping. He would never allow that. It's been discussed. It's not really in the budget anyway, but even if it were, DH would never go for it. He's made that clear.
I did start buying more child care last spring when things got really out of control. And then DH started complaining about the price of daycare and made me prove to him that we really needed to spend that much and also made me give him the figures again about the cheaper places in town and how little it would save us by changing daycares.
Our daycare will be ending soon and I've put DH in charge of finding new daycare and thus far he's refused and said he can't handle that, but I'm starting to delegate more things to him and that's one of them. Sometimes it seems like I have to go to those lengths.
Yes, the out of state travel is really a big problem. It's hard. But I'm probably not going to find a job in my field that wouldn't require travel and meetings. It's sort of inherent in the field. Maybe it would be less. On the flip side, I get really good benefits and flexibility so there are trade offs. I just need more help to handle the intense parts of the job. DH is not much of a support system and never has been.