21 weeks pregnant, but still does not feel baby movement

Hi, im 21 weeks pregnant. Im a little bit anxious because i have yet to feel the baby kicking (or maybe i do?). Hahah. I have sometimes felt fluttering feeling or kind of like bubble popping in my stomach, but im not sure if that’s how it feels when baby is kicking. Sometimes i do feel sudden pain and sometimes i dont at all (that’s when i became worried if anything bad is happening). Maybe i overthink a lot, but these little thoughts worried me always. I even have this mindset that it’s better to feel something (cramps etc) rather than nothing at all. I dont know if im making sense. Hahah. But anyway, issit normal to be feeing like this?