Hi Sheza,
I also had that pain!
Felt like the baby was shoving his/her foot into the cervix from the inside! I used to jump off the couch with the pain and the shock when my baby did this!
It is very painful! I never found a way to stop her doing this - even now she has a habit of kicking me when she sits on the couch with me...luckily it is not in the cervix anymore