He is probably having some separation anxiety. At 17 mos, he's too young to understand what "vacation" is. He just knows you left, later you came back, but now he's probably afraid that you will leave again. It may take a few weeks for him to realize that you aren't going anywhere. You may need to nap when he naps for a while, so you can keep up with him. We had a phase like that after the recent "time change" AAAARRRRGGGGHHHH! LOL! Hang in there, this isn't forever!
at 8:13 AM on Mar. 30, 2009