Curious ⁉️🧐🤔

My son randomly came up to me today and said that I have a baby in my belly .. he’s never said anything like this before and it was legit really random I said “what?!” And he repeated it again lol I was so shocked (He’s 4) .. I’m curious to know if anyone has had their kids tell them they were pregnant before finding out they were in fact pregnant.. I’ve been spotting during my fertile week going on 5 days now I ovulated on Friday according to glow.