my 6 month old got a stomach bug over halloween. my husband and i got vomited on many times. the doc said to slow down on her formula to give her a break, so we did and she got better right away. once she was keeping her formula down again we put her back on her infant oatmeal every night, she had been on oatmeal for about a month prior to the stomach bug. her first meal went great, but we noticed a little diarriah the day after. The next night she threw up only two bites into her oatmeal. other than that she has been acting normal and no fever. could this be a food allergy? even though she had been on oatmeal for over a month prior to getting sick?