She's pregnant, not working or doing any housework whatsoever. When I ask for any help she just whine.

She whines at me and tries to find reasons to blame me for anything.

I'm trying hard to motivate her to get up and go outside with me but she doesn't even want to come along to take a walk. She also probably put on like 40 pounds of pure fat in just a couple months, which simply cannot be healthy for my child.

It's getting more annoying than I could possibly describe. Any tips ?