Our daughter has CF and is 3 yrs old. She often has bouts of nausea and will occasionally vomit. She saw a gastro and had a barium but everything was normal. This has been going on since Feb and she saw the gastro in April. Because she is still complaining she is going to see the gastro again. There is thought that it might be reflux but the tests were neg. in April and I don't want to put her through it again. Has anyone had a similar experience? What was the problem? How do we solve it?They are also considering a probiotic for her. What has been your experience with this?Thank you.