my baby 5 months old, but still she is not rolling,

A. Hello mommy, Don't worry. Every baby develops at their own pace. Just keep doing tummy time and soon you will see him roll-over. Your baby may be able to kick himself over, from his tummy to his back, as early as age 4 months. It may take him until he's about 5 or 6 months to flip from back to front, though, because he needs stronger neck and arm muscles for that maneuver.