Influencer Abbie Herbert was late in her third pregnancy when social media commenters tipped her off to a potentially serious symptom she had dismissed.
In her third trimester of her third pregnancy, Abbie Herbert felt like she knew just about everything.
"I was like, I know everything. This is nothing new," Herbert, 29, a content creator and influencer based in Pittsburgh, tells TODAY.com.
It wasn't... [4263 chars]