My last question for the day I swear. I feel flutter like movements in my lower abdomen. What could it be?

I know it's like way way too early to feel a baby moving or kicking for sure, I'm only on cycle day 20 out of a 26-32 day cycle. (it varies a little sometimes) Have you ever felt it or heard someone having what feels like flutters, feels like there is literally a butterfly or something in your lower abdomen fluttering around? What is it?
It's not gas, I know, just to clear out that option.
i don't have to fart, i even tried too and i can't. lol
when did you feel them. you say early, how early?
they are off and on.