Lol you'll know it hurts

Youre probably too early. But it's painful depending on how you sit n how the baby is.

it feel like a kick in the rib (exactly how it sound lol) and it can be painful..

when baby does kick your ribs you'll know trust me

Your uterus isn't high enough up for you to be kicked in the ribs yet. At 20 weeks your uterus is only at or close to your belly button so it's not the baby yet.