Unexpected house guest: advice needed

Every year for the past 5 years we’ve hosted Thanksgiving at our place and every year, we invite my uncle to come, but he declines.

This year, thanksgiving is 1 week before my due date so we’ve told family and friends (including my uncle) that we’re not hosting. Yesterday I get a text from my uncle saying he bought a flight to visit us on Thanksgiving! He never even asked us—just bought a flight. My husband is furious and I’m stressed out about having company so close to my due date (my first child came a week early), so I responded and told him that we’re not planning on cooking and that there’s a good chance I’ll be in the hospital, so he should reconsider his visit. He responds telling me not to worry about it and that if I’m in the hospital he’ll just visit me. Anyone have any suggestions on how to politely ask him to reschedule his visit a second time??