Sore spot on belly

I'm 25 weeks now and for a couple weeks I've had this pain in my belly. Feels bruised and hurts . More when I touch it .it's to the left of my belly button My doctor said I'm OK but I'm wondering if any of u ladies have this as well.?? It's my third pregnancy , not sure if that has anything to do with it. I am also on my feet Constantly. Ugh I just want to lay down.