Does my fur baby know?

I dont know what's different today than other days but my 7 month old puppy literally hasn't left my side. Normally bed time means I undo the bed she gets in and gets comfy on her daddy's pillow I brush my teeth pee lock up and come snuggle with her. (Bf is a trooper and works 3rd shift) Tonight she followed me everywhere I went. She didn't have crazy time like she normally does every night. she laid next to me on the couch from 4-9 and now she's laying right next to me in bed with every part of her touching me. 
Do we think she's maturing and finally calming down? Or does she know her mommy has a baby growing in her belly?
Thoughts?