This is really the question to ask.

I'm due in less than two weeks, and I'm doing the "one and done" route. Costs, house space, time, and frankly, pregnancy wrecked me emotionally and physically. It's incredibly difficult to have a high-paced career (which I love and thrive on, to be clear!) ...when you are throwing up in the toliet constantly.

Yup, only one. One is enough.