Just to clarify, did you find out you are NOW sterile, or that you have always BEEN sterile? Could be that your kids are yours and this is recent... or not.

We definitely need some follow-up on this one.

The second coming!

why would you go through a series of fertility tests if you already have a child and you don't seem to had been planning for the second?

Your wife is a noob. Everyone knows you don't ever keep any evidence that can implicate you to cheating.

I would have the kids texted to see if they are yours first before jumping the gun. If they are not yours well I'm sorry to hear that.

Get tested again BEFORE you say anything!

Sorry, OP. Hope you're able to get some favourable clarity.

Doctors are wrong all the time. Don't be quick to point the finger.

I'd get a paternity test without your wife's knowledge before you acuse her of anything. But even if your suspicions prove correct, be kind to the kid, who only knows themselves as your kid.

please follow up on this and give us details!

I guess this is the part where ignorance is bliss (but wouldn't be right)