Baby kicks

i felt my baby’s first move/fluttering at 16 weeks! and by 20 weeks movement was hard to miss! now 31 weeks and baby has been kicking my ribs and side hard that i can no longer sleep thru it. so strong sometimes he loves to poke out his elbows near my belly button and just stay there for few seconds! my first pregnancy also! it usually depends on ur weight and size and where your placenta is located at!