Do any of your LO's have a flat spot on their heads? DD has a small one on the back of her head, which makes sense because she likes to sleep face up (and not to the side). DH and I have both done some research on it and many new studies say it's mostly a cosmetic issue that will resolve on its own once DD is more mobile, but others talk about helmets, etc. I'm going to bring it up at her 4 month appointment on the 27th, but I'm doing my best not to stress about it right now. If anyone has a LO with a flat spot, have you talked with your pedi about it? Just wondering what you've learned and whether I should be concerned or if I'm totally overreacting.