DD started getting what looks like a strawberry hemangioma on her chest a few days after birth. I actually thought DH had pinched her when we went to snap the top part of one of her sleep 'n plays until the mark didn't go away. I read a little about them and they're no big deal; they usually disappear by the time the child is school aged. But I noticed that DD's has a large lump underneath it. The mark itself is level with the skin surface, but the lump under the skin is soft and seems to be getting bigger. It doesn't seem to cause her any pain. Any thoughts?