Some people say like a fish wiggling or butterflies but at the start for me it was really similar to if I ate something causing my stomach to grumble ( I can see why people would rather butterflies & fish as an analogy!). It was really as they became more defined and frequent that I knew for certain they were kicks.
I'm not sure if it was the baby or not, but the other day I felt an odd sensation, but not painful, almost felt like when someone flicks you. I am 16 weeks with my first baby so questionable if it was actually the baby or just a growing pain.
It feels like a muscle twitch to me. Not painful, just involuntary movement. I also had that fish feeling early on. Now it just feels like legit kicks.
To me the first kicks felt like bubbles popping in my lower stomach. Weird analogy but it's kind of like the feeling when you have a gas bubble, except instead of traveling down and coming out as gas it pops in your stomach
Re: Kicking