The baby’s head in the pelvis could interfere with your gait and you might start waddling. Continue to wear sturdy footwear and be extra careful when using the stairs. As the baby takes more space in your belly As your baby fills out even more of your belly, lots of things might start to change: Whereas before you were sashaying, you may find yourself waddling. Finding an easy position to sit in – let alone sleep – is becoming more of a challenge. And bumping into chairs and counters is par for the course.