DD3, now 2.7 yo was born with two small sacral dimples in a Y-shaped groove just above her bottom. Apart from raising an eyebrow at her newborn discharge check in the hospital the paediatrician mentioned nothing about it. Physically she is developing very normally apart from the fact that she still pees every 10-20 minutes making potty training very difficult. Has anybody had any experience of later potty-training with a sacral dimple, and in your opinion should we be seeking medical attention for this (yet)?