Get the cleaning lady, just leave for the day she comes. Totally worth the very small risk.
I know this wasn't what you're asking, but I feel the need to comment on "DH doesnt think the house is dirty, has never cleaned in his life and won’t clean."
If he pulls his weight in other ways (laundry or cooking, particularly), then great. But if this is more representative of how he handles all domestic tasks, you should do some reading here (and elsewhere) about how difficult it is, particularly once you have kids, if your husband doesn't pull his weight at home. It may not seem like a big deal right now, but it's soul crushing to have to handle all the domestic stuff yourself. It might be time for a come to Jesus conversation with your husband and make sure he knows he's got to step up. As a rule of thumb, unless one person is not working, I think that between laundry, cooking, and cleaning, each person in a marriage should completely own one of those realms. Otherwise, in a year or two, you'll be drowning.
Congrats on the baby!