@bodyscanmirror: The First Time a Baby Sucks Its Thumb in the Womb 👶👍 Did you know babies can start sucking their thumbs long before they're born? Around 15 weeks of pregnancy, this natural reflex helps prepare the muscles needed for feeding after birth. Watch this incredible moment through realistic fetal anatomy animation. 💙 Follow for more amazing pregnancy and human anatomy videos! #pregnancy #tiktokgrowth #babygrowth #explore #trending