Say for instance I was just sat on the floor playing with my little boy, I go to get up and wham! It's like the muscles mid left side of my bump cramp up, it hurts and it takes my breath away. I try getting up and the more I move the worse it gets. Once in up I feel like the babies head is sticking out my side or something! My tummy feels generally hard but it gets heavy and hard and uncomfy. Is this muscles or Braxton hicks? Once it starts I can't move 5 paces or bend down without another attack of it. I have no choice but to lay down, but even then it feels like someone is sat on me! Surely it shouldn't be this difficult just to move around!?