What can happen to my baby from drinking spoiled formula?

Yesterday i went to pick up my WIC checks from the local office, well their computers were down and they couldn't print out my checks so they gave me 5 cans of formula (concentrate) and told me to come back and see if the computers were up tomorrow, well last night my daughter woke up and i went down stairs to make her a bottle and i had to open a new can so i grabbed one of the ones the WIC office had given me made it up and poured her a bottle gave it to her and went back to bed, well this morning when we woke up the baby was covered in puke it was everywhere!!! she she seemed very upset, so i gave her a quick bath to clean her up and then i when i was getting her dressed she starting to vomit again all over the place.... i went to open another can of formula and it was all curdled and stuck to the top of the can .. it was disgusting!!! I immediately called the WIC office and told them.....since then she has been extremely cranky and crying like crazy, not like herself, she doesn't have a fever but i don't know if i should bring her to the doctor or just let her ride it out...could she get really really sick or just a belly ache???