That was completely and utterly out of your control. You did absolutely nothing wrong! You can talk about it here. I think the feelings of anxiety are a completely normal response. Remind yourself that he is safe with you now and this was not your fault!

If he ever does find out, I can't imagine him blaming you or thinking you did anything wrong - you were the one who pointed out they gave you the wrong baby - truly a mother's instinct and bond had already formed!

It's tough when people are dismissive about the things that are very painful for us!