Do you think babies know you're pregnant??

Darcy • I have a 2 year old daughter named Ha'ani. She is my everything!! Going on baby #2 38wks Due 10/3/2016 👨‍👩‍👧💍
Okay so I defiantly know dogs do, but do kids, babies?? I'm not even showing yet and my daughter whose 1 1/2 years old points at my belly and says baby baby !! And sometimes hugs my tummy. Does that mean she knows?? Or I'm just overthinking..