Belly Button Pain

Cecilia • Mommy to our rainbow princess Manuela Carolina (born Feb 2017) after a miscarriage in November 2015. Baby Boy due March 2020!
I'm only 7w1d but I have a soreness around my belly button. I've read of other ladies experiencing this much later when they have a bump - not this early. Any one else feeling his? I got for my first ultrasound tomorrow!