hey tenar,
i felt bub move for the first time after my 20 week ultrasound. i had felt slight flutters since around 19 weeks but they were few and far in between. now i'm 21/22 weeks i've felt the baby move nearly every night, so i imagine this is very normal.
i too was a little concerned when it was days in between movement but have read this was normal and now it's everyday i can feel them.