Can you have natural hernias?

So this is kind of a follow up question I guess to my GERD question.
When I went to discuss GERD with my DR I told him I thought I had a hernia (long story) Anyway he placed his hand on my belly button and told me to cough – he then said ‘yep you’ve got a small hernia but it’s natural most people have them from birth’ ....
Is this true?
I have a hard time believing Dr’s as they seem to guess a heck of a lot of times (or so I’ve found) – anyway I’m starting to wonder if this is why I have reflux so badly….
I know you guys are not medical professionals but maybe you’ve heard of this? A natural hernia… nothing to worry about?