I'm having a super strange sensation/pain underneath my right breast. It's like a half dollar sized…

I'm having a super strange sensation/pain underneath my right breast. It's like a half dollar sized patch of skin that feels numb and painful to the touch, like if I scratch at it I can't feel my nail but it is slightly painful even when I'm not touching it. I forgot to ask about it today at the doctors but I looked online and apparently it's relatively common, someone even described it the same way I did. Anyone experience this at all? From what I read it's probably just because my skin is stretching but it is worrying me a bit 😕