Cat knew I was pregnant!?

Elaine.
Before I found out I was pregnant my cat, not a kitten, not an adult (teenager) I guess lol started wanting to cuddle me & rub on me & just be so affectionate. It was & still is kinda annoying. She was never like this... she was rambunctious & running here & running there! 
Now she's always in my face purring. 
Then I found out I was pregnant... did a little googling & found out cats are "sensitive animals & can pick up on pharamones pregnant women produce" 
Just wondering if anyone else has a cat or any other animal & encountered this? 

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