Children predicting gender

Britt
I've heard that children kind of have a sixth sense about gender and I'm wanting to hear your stories! My son is 4 (turns 5 tomorrow) but he told my parents that I was pregnant 3 days before I had even taken a test! We weren't trying to get pg because our youngest was only 6 months at the time so it wasn't like we were talking about it either! Anyway...ever since we told him he's been calling baby "sister" and he tells everyone "mom has a sister in her tummy". It's super cute and I hope for his sake it's a girl but how creepy would it be if he's actually right?! It actually makes me really nervous and anxious to find out. Anyone else have stories like this?