my 6 month baby had farex stage 2 formula for the first tym in the night at 9. at 10 she had breastfeed. she slet then. at 3am in the morning she got up and vomited. i offered her breast milk again. after having that she again vomited she was discovered e colli a few days ago. her antibiotics course is over now and she seems fine. Kindly tell me what could be the possibility. is farex formula 2 is the reason. I should have given her formula 1. or something else. please reply as soon as possible. thanks