Hai! My youngest had one too, it's actually quite common and usually nothing to worry about, but definitely worth mentioning to your paediatrician just to be safe, especially if it's deep or has a tuft of hair around it (some of the mums in my circle had to do a simple ultrasound just to confirm everything was fine). Mine was just a shallow dimple and the doctor said it was fine, no follow-up needed, so try not to stress too much!