Mom Heart

I've been wondering for the past 24 hours . . . What happens to a woman's heart when she has children? It has to be supernatural. Things I NEVER even gave a second thought before children scare the poo out of me after children. For example, you want to traipse around in the woods with a heavy pack in a thunder and lightening storm, go for it. Never gave it a second thought. Not my thing, but you go for it. Well, my child wants to do that and I'm turned into an anxiety ridden freak! I let him go, but I'm now a freak! Must learn how to wrangle this mom heart!  I don't want it to go away.  I like this mom heart.  I just need to know how to manage it.  I have no idea if dads experience something similar.  Would be interested to know.  I just know that a mom heart is fierce!