Myth or facts or just pure Coincidence

My nephew woke up this morning crying for me , keep in mind he is a mommas boy . So I was very surprised 😮 and my sister being the mother of my nephew was trying to carry him and he will just throw himself on the ground . She then goes on saying that what if I’m pregnant because how he wanted to be with me only . What do y’all think ? I feel like all that is just a myth but who knows 😂