Here is a test to see if you're sleep deprived:
You wake up in a panic because you've been breastfeeding in your bed and can't find your child's head or face under all the covers. You start digging because you're convinced that you have suffocated your tiny little baby.
Then you realize your child is in the bassinet next to your bed and you've been trying to breastfeed your body pillow.
True story and I've had this freak out about 4 times now. And I'm one of the lucky ones because Jack is sleeping 3 hrs at a time at night. Oy.