What is this?

B

Okay I’m 35w5d. For the past week I’ve had this at the bottom of my belly.. its very sensitive to touch, and even when I press on it, it leaves an indention for awhile.

It’s size is probably a little smaller than a softball, and feels different from the rest of my stomach... it looks and feels so weird to me. Doesn’t feel normal! What could this be? And also, why does it look like that?!