My daughter had two VCUG's as well as other kidney/bladder tests, and it really wasn't anything scary at all, nor was she in any pain..When she was born, she had a T.E. Fistula, meaning, her esophagus was growing into her trachea instead of connecting to her stomach....Upon discovering that, they did immediate surgery. They also found that she only had one kidney and her bladder was refluxing back up into the kidney..She also has a small heart murmur which is scheduled to be fixed this month..Two issues down, one to go...Anyway, she has been on Septra, ever since birth for the bladder reflux, which prevents infection, and once she gets a little older, they are going to correct the problem. It's a simple procedure. All being said, it's been a long road so far...Anyway, I would just get it done just for piece of mind, it is no big deal at all...It may just be one time, and if there is a problem, they can catch it early and take care of it..Also, according to her urologist, most cases of reflux in children are common and mild, and if that's the case, your child will just grow out of it..They will put her on an antibiotic in the meantime..Unfortunately, my daughter has stage 5 reflux, and it can only be corrected by surgery...Trust me, I have been to way more doctor appts. than I can stand, but what can ya do..They are our babies....Good luck, hope there are no issues..