This is my first and I am 9 weeks pregnant. My tummy is shaking. Well I would describe it more like jumping. Best way to explain it is like when you run and are tired and your chest starts moving in and out because of the heart pumping but that movement in my tummy. I find it so weird. Not noticeable. Like it doesn't bother. I was just laying on my back, looking at my tummy and happen to notice it do little jumps. What is it? Is it normal? Is it cuz I'm hungry? It is the baby moving? Baby heart beat? What is going on? Lol