Little People, Big World stars Tori and Zach Roloff recently had some fun at Disneyland with their 1-year-old son Jackson. But things took a scary turn while they were all waiting in line to get on the Peter Pan ride.

"He was pulling away from me in line and it happened. I knew right away that we were in trouble and Jackson would need to see a doctor," Tori wrote on her recent Instagram post. She went on to say that she was "so bummed" that they all had to leave the theme park and that "her poor boy was in pain."

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As it turns out, Jackson had had nursemaid's elbow, which Mayo Clinic says occurs when the bones that make up the joint are forced out of alignment and become partially dislocated. It's super common in young kids because their bones and muscles are still developing and it's easy for 'em to pop out of place.

Luckily, Tori announced that Jackson was using his arm again by the time a doctor saw him. Because he was doing much better, the family ended up going back to Disneyland and had a wonderful rest of the day together. The whole experience ended up being a learning moment, Tori said.

"I tend to put a lot of excitement and expectations on Disney because it’s such a special place to me. But it was a good reminder that things don’t always go according to plan and you have to roll with life," she wrote.

It's good to know that little Jackson is doing much better now. On another positive note, the family snapped a really cute photo together with their favorite mouse.