They call it separation anxiety. You know when your baby doesn’t want you to be out of her sight. She just wants us to be around her. It can be frustrating if you have other things to do. Even a mere short trip to the bathroom often would ignite a burstful of tantrums and wailing from her. And the moment you turn your attention to her, smile at her or pick her up, her mood would altogether change in a snap. “Weren’t you just bawling like the world would end? How come you’re all smiling now?” Geeeeezz if only little C can understand me. How can an almost 6 month-old baby act this way? Isn’t it too early yet?

What the American Pediatrics Academy has to say about it:
Between the ages of eight and twelve months, your child sometimes may seem like two separate babies. First there’s the one who’s open, affectionate, and outgoing with you. But then there’s another who’s anxious, clinging, and easily frightened around unfamiliar people or objects. Some people may tell you that your child is fearful or shy because you’re “spoiling” her, but don’t believe it. Her widely diverse behavior patterns aren’t caused by you or your parenting style; they occur because she’s now, for the first time, able to tell the difference between familiar and unfamiliar situations. If anything, the predictable anxieties of this period are evidence of her healthy relationship with you.

The last sentence there is consoling… but baby, mommy has to go to the bathroom too.