Jennifer Lawrence recently told David Letterman about her experience visiting a hospital emergency room. The "Hunger Games: Catching Fire" star was complaining of stomach pains, but it turns out that she had "bad gas." 

According to the Huffington Post, Liam Hemsworth's costar, 23, had to delay her "Late Night with David Letterman" appearance due to a health scare.

The starlet had reportedly had some discomfort in her midriff area. After three weeks of of stomach pain, she finally went to the ER, thinking she had an ulcer.

"You can only s--t your pants so many times, before you have to go to the hospital," said Lawrence to Letterman about the experience.

Right before the "Hunger Games" sequel movie premiere in Los Angeles on Monday, the starlet went to see ER doctors, reported Hollywood Life.

Lawrence also revealed that she had an endoscopic ultrasound at the hospital so doctors could check out her internal organs. When she was put to sleep, she had crazy dreams about nuclear bombs, the Kardashians and "The Real Housewives of Beverly Hills."

The actress was set to head to NYC for an appearance on "Late Night with David Letterman" on Tuesday, and "Live with Kelly & Michael" and "Good Morning America" on Wednesday." But she had to push both events back a day later because of her stomach pains.

Thoughts on Lawrence's issue? Watch her interview with Letterman and tell us what you think with a note below!