belly pressing

Is it ok to push around lightly on your belly to get the baby to move? I've been told it's ok but I've also been told that it's not safe because of the cord getting wrapped around the baby's neck. I've also always been told that if the mama isn't hurting then baby isn't hurting. I know that babies have lots and lots of padding in there so he's pretty safely insulated and cushioned, I just don't want to do anything that could potentially cause harm to my little one.