Baby vomiting up milk formula

wyntersmom

My boy is 3 months old. We had put him on soy formula after a month of breastfeeding. Now his doctor wants him on milk formula. Well, I tried it yesterday. I gave him 2 oz and three hours later, he just puked it all up. He was like that all day. Here's the strange thing: he never cried, never fussed. He was happy all day and he still is. So, now I'm wondering if it was the formula at all. Has anyone else had this problem?