what is this feeling

September

this is my first pregnancy. im 29 weeks lately ive been feeling like itll feel as if its shaking. i think of it like if thousands of fireworks are going off like there's so much commotion. but im not sure what it is. its making me a bit nervous. i don't think the baby is kicking that fast so not sure whats going on. ill be sure to ask at my next appointment but that's in a week