Will Jello make her dogs sick?

[TriggeR]

I'm babysitting my girlfriend's dogs. One is a Yorkie and the other is a Westie(I don't know what breed he really is besides that. He's all white,kinda short and has a short/stubbish looking tail). I was eating a bowl of jello and got up to answer the door. I sat the bowl on the table and when I got back,both dogs were standing on the coach,both had their head in the bowl eating. It was kind of a lot of jello to imagine the two of them eating. I made it from the biggest box jello is sold in so it was quite a bit and I hadn't eaten much. They had almost finished it all so I'm just wondering if it'll make them sick? If it does,do you think they'll be sick enough to have to go to the vet? Both of them have little pot belly stomachs which they didn't have before they helped themselves to my jello.