I was sitting down with my son while he drank water (he'd roll over if I wasn't there) and I noticed this bump on his tummy/chest area and felt it. I'm pretty sure it's not part of his ribs but I don't know what it is. I can feel his heartbeat pretty well in that spot as well. He's almost 7 months old. It doesn't seem to hurt him any when I touch it.
Should I take him to get checked or am I just paranoid?