Acting very clingy

Strange question for you. We have a 1 1/2 year old female who has been acting very strange lately. Its not a problem at all, just curious if anyone has had similar experiences. She always has been the type of dog that has to be in the same room as me or my wife, but recently she's been acting very clingy. Whenever we are watching TV or working on the computer she'll walk up to us and raise both her front paws because she wants us to pick her up. It's pretty funny actually...she looks just like a little 3 year old toddler raising both arms to be lifted.

Not sure if she's doing this because she's at that dog/toddler stage. Some people actually have told me it is because my wife is 5 months pregnant. They said Dog's can sense this and start acting differently.

Any similar experiences?