When did you first feel baby?/what’s it like?

I’m 20 weeks FTM, and I’m pretty sure what I’m feeling is baby moving, but he’s like… pretty much in my pubes, like right at the top of them. Is that him? It’s unlike anything else I’ve ever felt but I can’t say for sure. It’s not gas. Not an upset stomach. Not painful. Not cramps. Just lightly something inside me, for lack of a better description, like a woosh? Idk just looking for some kind of comparison other than “butterflies” because that’s not really how I’d say it feels?