Where Did My Baby Go?

Alright, there is something seriously wrong here. Canon has always been such a sweet, easy-going, lovable, happy child. Sometime over the past couple of days he has become SUPER CLINGY! It's almost as though if I'm not holding him, he's not happy. Of course, I am able to find some times in the day where I can set him down to play, but usually he'll scoot his way over to where I am and do everything in his power to get me to play with him. He'll try to grab my legs if I'm standing up. He'll climb onto my feet or onto my lap if I'm on the ground. He'll even climb up onto my chest and attack my face with "kisses" if I'm not careful. (Ok, ok... so that's all cute and everything... so why am I complaining?)

It's those times that I can't help but pick him up to give him a hug and play for a little bit, but if I set him down on the ground after that... oh no... Canon does not like that. Even if I'm still standing next to him, he'll bawl his eyes out. It's kind of frustrating. If I'm carrying him around in the Bjorn to go run an errand, I'll take him out and put him in his crib so that I can take the thing off. As soon as I lay him down, he lets out a long cry. (Sheesh! I only need you to be down for a moment...hold your horses!) He does the same thing if Mark is playing with him and sets him down... even if I'm still in the room. I guess he just doesn't like to see our backs.

I thought that he was starting to get separation anxiety, but... seriously?... crying even when I'm still right there next to him?

Any advice from you veteran moms? Do I have to live like this?