I agree that if it was just a small amount I wouldn't worry, however, I found the following info and only you know how much your baby ingested:
Chocolate/ fatty foods
Although we have never personally experienced it, for years we have heard horror stories about dogs getting into bags of chocolate and dying swiftly. We have also heard stories of people that have long time family pets that they occasionally feed from the table and after doing this one time, the dog is found dead. High levels of fat, which is what is found in chocolate and some table scraps, can be deadly to your dog. One of the common conditions that ingesting the wrong foods can cause is pancreatitis. This is a malfunction of the pancreas, which if left untreated can cause death. Vomiting and lethargy are early symptoms. This is treatable if caught in the early stages. One common theme with everyone that lost an animal to the wrong food is they never knew how harmful foods could be to their pet. Below is a short list of other common foods that can be dangerous to your pet.
Alcoholic beverages
Chocolate (baker's, semi-sweet, milk chocolate)
Coffee (grounds, beans, chocolate covered espresso beans)
Moldy or spoiled foods - be careful to dispose of these in an area where your dog cannot get to them
Onions, onion powder
Fatty foods
Salt
Yeast dough
Macadamia nuts
Raisins and Grapes
http://acmepetco.com/geninfo.html