Bump on babies head ?

Casey • Mommy of 1 since 2010 💙👱🏻 Baby girl born May 29,2018 👶🏼💗

I just noticed a slight bump on the left top of my babies head .. kind of right behind the soft spot. She’s never been hurt and she doesn’t mind when I rub it. I’m guessing it’s the skull. Anyone else notice something like this ?