Thanks for the input! I spoke to DS at 9:00pm tonight and they were just getting ready to take a night hike and he said he would call when they returned to tell me how he is doing. It's now 11:00 and we haven't heard anything so I'm hoping that's a good thing but I'm completely out of my mind with worry!
He is there with several of the dads from the troop (DH couldn't get away from work this week) and we've left a couple of messages with one of them that we know well and who knows DS well. (Probably not the best dad to have contact with though . . . even his DW couldn't reach him all week when I was away with her and the boys for a school trip). I realize that the dramatics are definately put on for Mom and that the adults there with him are not seeing the "misery" that he is portraying for only us. However, DS is also very shy around others and would not feel comfortable letting them know how he is feeling. He said his head and stomach have hurt and when I ask him if he's told this to one of the adults, he says no, he just hopes it will go away (and he tries to drink water but "it's gross."

).
I was also surprised about the allowance for the cell phone and we have never allowed DS or DD to have access to one, but he was off to such a bad start from the beginning and I knew that he would not feel comfortable asking to use one of the adult's, that I suggested DH leave his (mine is used for work purposes so I couldn't leave mine). He asked if it was alright and it was okay (although that came from the troop leader, not a camp official). I understand the comments that it may be contributing to the problem, but I honestly believe that it was a good decision as speaking to him has enabled us to reassure him and calm him down, and as a mom, I at least feel better knowing exactly what is going on with him rather than being in the dark.
And this overprotective mama bear worked for 3 summers as a camp counselor herself so, yes, I totally understand about the homesickness and the cutting the ties. However, DS's problem is not that he is homesick. He just really hates everything about camp. And I knew this going in, but he really thought he'd like to give it a try, so I agreed to let him try it out. And I'm really proud of him for trying. He said yesterday that he'd like to try to stick it out and not fall behind on his acheivements but I think the poor diet, lack of sleep, and limited fluid intake are getting to him now.
BTW, Star Wars Mom, DH and I were both just saying that this is a kid who would probably be much happier at space camp!

I think that will be the direction to go if we ever try "camping" again!
Well, still up in the air about whether we're heading up to get him tomorrow or not . . . will probably depend on him and how he's feeling physically. Thanks!