Dilated kidneys in baby?

Vanessa • Single mommy to baby Ava 05-31-16💕💜
So at my gender ultrasound way back when, they told us the baby's kidney, just one, was dilated but they consistently reassured us that nothing would come of this and it'd probably heal on it's own by my third trimester ultrasound. Well today i went in at 34 weeks for my third trimester ultrasound and theyre still " a little dilated" but my doctor said she thinks baby will be 100% A-OK once she's here. I cant help but worry, i mean i am my child's mother after all haha , has anyone else been told this and everything come out okay???