My newborn is 4 days old. During the day we place her on her back on our bed while we watch TV or whatever. A few times she's managed to roll herself over onto her side. Is this possible as she so young? She does have very long legs and big feet (which she got from her dad) nothing worrying she seems happy sleeping on her side just seem unusual as she's so little. I thought they don't tend to roll over until they're abit older?