People challenge my nerd cred all the time. I just show them the photo of me winning my middle-school science fair, wearing my Casio calculator watch and eyeglasses so big they look like they can see the future.
If you have an embarrassing story, and it's a source of shame, keeping it in just compounds the shame and turns the story into something poisonous. And if someone knows about it, then it can be used against you.
I wasn't mentally prepared to take care of them, I was focused on my career. And then when I got to be in my 40s and I thought about having kids, I wasn't able to have kids naturally. I don't regret it.