[Nikki+2]

Can anyone think what this could be? Sugar is crying periodically like he is in pain. I always babygate Spike and Sugar in the study (which is open to the rest of the house) for meals (to protect their food from Gracie) and when I'm not home. He woke up acting perfectly normal and pottied normally. I put him in the study with Spike at 9:00 to eat. I was in and out of the study on the computer all morning so he stayed in the study. At noon I let them out to play outside. When I opened the gate he jumped up to run out but started crying like he hurt. I petted him and he stopped crying but when I picked him up he whimpered an little. I manipulated him limbs and pressed around his belly and chest and got no reaction. After that he acted okay. He didn't run around outside, just layed in his bed but that is normal. Our noon outing is really more for Spike to potty and spike and Gracie run around. Sugar always either lays in hiss bed or wants to be held. Around 1:00 he whimpered a little again. Again I looked for the source and couldn't find anything. He was laying on the couch with my daughter and just whimpered some more a few minutes ago. The only reason I haven't called the vet yet is it isn't continuous and I took him to the vet once with similar symptoms and it was gas. A very very expensive case of gas.

Sooo, I'm giving it to about 3:00 or 3:30 (EST) before I call to see if it resolves itself. Is there anything else it could be? Like I said it isn't a constant pain and I can't find a source by pressing around.