My son is being treated for an ear infection and this is his firs...

My son is being treated for an ear infection and this is his first time on omnicef. I have noticed day #2 and my 15 month son's stools were maroon colored. My first thought was blood as well, but I was told this is a normal reaction for omnicef to turn bowels orange or maroon colored resembling blood due to reaction with iron in the diet. The pediatric nurse assured me that this is normal and they look for symptoms such as bright red blood in the stool,black stool, and abdominal pain. My son's appetite is good and he is now after day #2 afebrile and doing just fine. However, I will continue to be observant.