The Butterfly Effect

So i was watching a YouTube video and I came across an interesting concept. This gets into theoretical physics with parallel universes and stuff. So basically the Butterfly Effect states that the smallest action, such as the flap of a butterfly's wings can change the outcome of something in the world thousands of miles away. This implies then that if a person was able to go back in time, and they make one difference, they could change the future in millions of different ways. This leads me to think that there are thousands of parallel universes, some very different from ours and some virtually the same. When a choice is said to be made, both of those choices are made, kinda similar to the Schrodinger's Cat problem. As result, there are trillions upon trillions of different combinations of choices and events, each creating a different universe. Just something to think about.