Hello KT'smom and welcome to HW!
Was your child sweat tested at a or with an accredited affiliated CF clinic/team? What method did they use to sweat test your child? Gibson/Cooke is the prefered method and Wescor is also an accepted method. Wescor is the "watch" type method. Do you know what your child's chloride numbers were?
I can truly sympathize with you on the wait... It is very hard to do. The doctors need to have 2 positive sweat tests (done on different days) to make a diagnosis. On Monday, they should have the results within hours for you.
CF can present in many different ways. GI problems being one of them. Her symptoms sound suggestive of CF. The next test for your child will probably be the fecal/elastase test. Depending upon her results, she will than be on her way to getting the help she needs to thrive.
Know that we are all here for you in this difficult time...