Baby sitting low

Lorena • Had our baby girl! Ophelia Jean Rose came into the world Nov. 28, 2015!
Anyone else's baby sitting really low? Is it normal? This was last week at 21w2d. Our baby girl is sitting really low. Like the tech had to go almost to my hooha to see her. Today she was a little higher, but still really low. I'm a B-Belly plus size mom.