Belly button feels weird !

Mayra • Third time mommy to a beautiful baby girl Rosalia , Thalia , & Viviana we are adding our last baby and this time is a BOY 💙 in May 30, 2023.
So every time I move my belly button feels like is stretching from the inside and out . My boyfriend likes playing with it and it tickles lol . Has any of you lady's had this feeling ? I'm 23wks and 1 day .