Head butts to the cervix.

[MyM&W]

I don't remember either of my other children doing this. But this child is seriously head butting or punching me in the cervix. Shea been heads down the entire pregnancy so far (21w). It is the oddest, grossest feeling ever. Fluttering inside the vagina is just so weird to me. I really don't like it and it makes me worry she will shorten my cervix doing that..she hardly makes any movements anywhere else that I feel (anterior placenta). Anyone else have a baby who enjoys bouncing off the cervix? Haha.