Not really that silly :) what you're saying kind of makes sense in a weird sort of way! They do say that baby can hear all your bodily movements inside, like your heart beating and other organs working away. So I can see where you're coming from with that.
I worried that the baby would pull on the cord and snap it! I was talking to a midwife about delivering the placenta and she said sometimes they have to tug on the cord to pull it out, and I asked if the cord had ever snapped while tugging, and she said yes it had. And I knew that babies sometimes pulled on the cord and I panicked that baby would snap the cord by pulling on it too much
but no, MWs pull much harder than a not-even-newborn baby could pull :o