We are having these exact same tests on October 1 for my daughter. When are you scheduled?
Here's what our Dr said (btw, it's Dr. D'Andrea in Camarillo):
He said that since DD's 1st UTI was when she was really little (we were at a different ped's then in St. Louis), if it had been him, he would have ordered the tests right away. She was about Mia's age when she had her 1st one.
Since then she's had 2 more since moving to California. Dr. D'Andrea didn't know about the first one, otherwise he would have ordered the u/s and VCUG right then. But I didn't think to tell him at the time. Just last week she got #3, and we talked for a while about it. He learned then about her 1st one as an infant. He advised that because of the repeat UTIs he believed the tests were medically necessary to rule out kidney issues, bladder not emptying all the way, uring flushing back up into the kidneys, etc.
He said that if he had been her dr at 5 months, he would have ordered the tests immediately then since a baby that age shouldn't get a UTI. He said that it's important to do these tests now to see if there's something going on since kidney damage over time can be really serious.
Does your family have any history of repeat UTIs or kidney issues? DH had some sort of kidney thing when he was a kid in Colombia, but he doesn't remember what it was.
When are you guys scheduled for? Let me know. If it's after us, I can give you the run-down on how it went. It will be different for us since she's a toddler, but it might still be helpful.