Done having kids?

Sa

So my husband and I have a 3 year old and a almost 3 week old. I am ready to start getting rid of the baby stuff as my infant outgrows it. My head says I’m done. My heart thinks one more. It would not be for a few years. I have 2 years of school to do, then we would stay In the house we are in for another year or two to save up a good sized down payment. So it would be 4 or 5 years before we have another one.

How do you know your done? Especially when your heart and head don’t match?