Can babies tell???

So my DH and I just began trying for our second little one. We have a 5 year old, and I have one miscarriage in between them and now. 
Sunday I woke up just feeling different, and I just know I'm pregnant, sadly can't test for several more days. However I know a woman fostering a 2 month old baby boy, and I got to hold him today. He's so precious!!! As soon as I picked him up he just cried and cried, so I handed him off and he settled immediately...the foster mom told me tht I must be pregnant, because babies do that to pregnant women its like they can tell your pregnant. If a boy cries, it's a girl. If a girl cries its a boy...???
Has anyone else heard this before?? Is there truth behind it??

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