Hello, again.
I know what you mean about the constant meowing. Sometimes I wish I were totally deaf and not just partially!
One thing it helps to remember is that you have changed the cat's routine it had established when you were gone all day. Now it has to find and adjust to a new routine that involves having you home.
I am a housewife that is home most of the time. Mystery, picture shown, is the same way. Her meowing is telling me that she wants me on the couch with "her" blanket so that she can lay with me. Right, I have more things to do than just sit with her all day, but sometimes it pays to do it anyhow for just one little catnap.
With the baby coming, I would take the opportunity to sit down with the cat. It is relaxing to you and the baby, and the cat too. Our cats are like our children... we're always too busy-- until we realize they are gone. (In memory of Emily, who had the biggest and best cattitude.)