Explaining Baby Movements

Brittany • Mom of a daughter 👩‍👧💜 Pregnant 🤰🏽 with 2nd daughter 👨‍👩‍👧‍👧🤱🏽💜 due 08/17/19

I’m 16 weeks today and the only way I can explain her moving is almost like a tighten feeling that’s moving in my stomach. How would y’all explain it? This is my second pregnancy btw.