From the outside, LeTysha Montgomery looks perfectly healthy.

But, for 20 years, she's been dealing with severe pain caused by a disorder called endometriosis.

"Having an invisible disease, you can't see endometriosis. So that's on the inside," Montgomery said. "So I'm told, you know, you look fine. But just because I look fine, doesn't mean that I am."

Since her diagnosis, Montgomery has been on a mission to educate other people about the disorder so they can hopefully be diagnosed and treated more quickly than she was.

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