Totally random! I wouldn’t worry about it—it’s very very rare, it’s not commonly terminal, and it generally never comes back. I’ve never met or heard of anyone else having it (which is why I don’t wanna go into detail, I’m sorry!) so there’s likely no chance you’ll ever have to worry.

But damn, was it hurty @w@ if my mind wasn’t already solidified about not birthing kids, it would be now hahaha