Not knowing your entire circumstances, I'm wondering if your husband is worried about something and for whatever reason is keeping those concerns to himself. Instead, while he thinks he's keeping that worry to himself, that "worry" is being expressed by his short behavior. If finances, insurance, job worries, fear of being left to care for your other children while you're in the hospital, or any other host of things are weighing on his mind, he too is probably in no condition to handle "extras" such as duties around the house etc.
I'm not excusing his behavior, but I do think if you can pinpoint where "he's" coming from, the two of you can come together and start working on how things should go from here on out once the "due date" arrives.
Afterall, having children isn't easy, let alone caring for them and yourself. I'm sure he's tired too. Just try to be understanding, and patient so that you can have peace before the baby comes.
I'd recommend easing up a little bit on future worries. If there are things that need to get done with set up for the baby, enlist sisters/siblings, friends, even your mom or in-laws to help. Invite them over for a "girls" type weekend and have them help you set up the baby room, and/or do a cooking party where they help you make a ton of make-ahead meals you can put in the freezer for when baby comes. You can even send guests home with meals of their own as a thank-you. If you need pampering, ask friends to join you for a day at the spa for something as simple as a pedicure if money is tight, or more extravagant like a weekend getaway for the girls. Many spas even have "pregnancy massage" packages.n See if you can get mom or siblings to take your kids for the weekend, or for playdates during the week. Or join a playgroup in your neighborhood, so at the very least you can get a break from your other youngsters.
In short, listen to your man and his words. He probably feels your attention is divided and not focused on him. He needs luvin and care too. Give him your attention. Find out how you can help him to feel better, and he'll more than likely come around. Be flexible in answering his requests, even though you're tired. Look to friends and family for the rest! You're goal now should be looking at how to best adjust to a new addition at home. Perhaps managing expectations, and realize that somethings like keeping the house really clean just won't be the norm until the kids are older. The key is find out what you and DH can be happy to live with and strive for it starting now.
Hope this helps.
N