bowel movement question

[lv4dogs]

UPDATE:
I just found this on multpiple websites (couldn't find it earlier on the other sites though)

Don't worry if he doesn't pass a stool after every feeding or even every day.

I guess since he is doing GREAT otherwise I will wait another day or two.



QUESTION:
When I first got him Fri afternoon his stools were small but otherwise looked ok. I brought a fecal to the vets where it came up negative under a smear (better than the fecal floats). He was dewormed anyways.

But I haven't seen him poop since yesterday morning and he's only had 2 bowel movements that I saw since I got him Friday afternoon.
It is possible that he may have pooped under something & not in his box when I wasn't looking but I have a feeling he didn't as I have never seen him wander under or behind anything before and I've also searched everywhere for poop. He's rarely out of my sight, maybe only a few times for a couple seconds each time and he is confined to either the living room & kitchen or a big dog crate. But anything is possible I suppose.
He is acting fine otherwise, urinating ok, eating, drinking, active, alert, everything else is normal.
He does meow constantly when in the litter box but has done so since day one, even was he was having bowel movements. He does not appear to be sensative at all near his rear end.
He is not eating a lot of solid food though, mostly formula and watered down merrick canned food. I do offer him moistened kibble (chicken soup for the kitten lovers soul) and he does knibble on it but he doesn't eat much of that at all.
And I do stimulate the bowels and bladder and he will sometimes let out a little urine but not feces. It almost appears he may not need this step anymore??????
Should I be concerened?


SEMI-UPDATE:
A receptionist finally called back from the vets office as she has spoken to the vet, they want to see the kitten but won't tell me if it's urgent or not.
I am BROKE & already took the cat to the vets yesterday (wasn't concerned then cause it was only one day with no bowel movement at that time and the vet didn't seem to concerned about it either yesterday).
If this is urgent I will get him to the vets no doubt but if it's common I'd rather wait a day or two longer.