My baby is a little over 6 months and we started eating real food at 5 months. When we started there were a few times that I gave him some oatmeal baby cereal but he didn't seem to like it so it was only ever a few bites. He didn't have it again for several weeks and then just a few days ago I gave him some again and then that night he was throwing up and having diarrhea. I thought he just caught a little bug from his cousins but then tonight I gave him a few bites of the oatmeal again but he acted like he hated it so I stopped and sure enough he's throwing up again. My husband looked at the ingredients and it contains tuna oil and fish gelatin...who knew. Anyone else have this problem? Could he have developed a fish allergy since last month?