I might sound crazy

So today is my nephews birthday and we went out for tea and there's a play area so I went in and played in the ball pit and random children kept coming up 2 me and giving me cuddles wanting to play with me I dunno it's strange but i know some children can sense pregnancy I'm ttc #1 because I have been feeling off lately I'm uncertain I think I'm going crazy haha getting to the point I wanted to ask can children sense pregnancy??