Pregnant Jamie Lynn Spears is terrified of giving birth, and her mom, Lynne, is making matters worse.

According to a source close to Spears family, when Lynne showed her 17-year-old daughter a video of a real natural childbirth, the former Nickelodeon star threw up.

“Lynne was trying to be helpful,” Star magazine quotes a source as saying. “She wanted to show Jamie Lynn what a woman goes through giving birth, that it’s a natural and beautiful thing, but all Jamie Lynn saw was the blood — or ‘goop,’ as she called it — the screaming and the pain.

“It was too graphic for her. She flipped out and literally got sick.”

And now Jamie — who is seven-months-pregnant — is totally freaked out. “She is wondering if a C-section is possible,” the source adds. “She wants to be knocked out and then wake up when it’s all over.”