hi, my 6 yr old granddaughter, completed a course of cefdinil for sinus infection on sunday. yesterday,her mother noticed a jelly-like stool in her underwear. granddaughter not c/o pain, no abd. distention/tenderness, no fever. she does not appear dehydrated, continues to eat/drink well. frequency of these small stools - many 1-2. could this be c-diff? thanks.