We went through the same thing! Tori was always way gassier than her twin sister. A formula would be fine for a few days, then she would start throwing up again. The one with the least amount of vomiting was Parents Choice Sensitive. When she went off formula it started to get worse. I was tired of being told that she had Reflux or GERD as it would be fine for a week or two and start up again. I asked the Ped. if she could be allergic and he said no, as she didn't have any other symptoms. I finally asked for a referall to a pediatric allergist. We got the referal, but the guy acted like he had never seen a child before. (He was NOT a Ped. allergist, just a reg. one) Someone I work with told me about a Gastroenterologist at Childrens. I called out of desperation and mothers intuition, but mainly Grandma's intuition had been eating at me and things just didn't seem right. It was a couple of weeks before we could get in and I couldn't stand seeing her suffer. I figured that trying goats mild couldn't hurt and would maybe help. By the time we got to the Gastro. we had been "on the goat" for two weeks with zero vomit. She, the Dr., said that we did the right thing and that she wouldn't even have to run tests as it was obvious that it was an allergy. (She even diagnosed a 'diaper rash' that I couldn't get rid of as an allergy to her diaper. Changed them - rash gone) She did ask about everything they had ever been given as far as formula was concerned. I told her that she didn't vomit everyday so I never was sure about an allergy and two other Dr.s said that if she were allergic that she would break out in a rash right away, vomit right away or show other symptoms immediately. She said that children are different and all respond differently. The reason Tori handled the formula as well as she did is because the Sensitive formula's proteins are broken down into smaller particles. The proteins are what my little one is allergic to. Goats milk has an entirely different protein and that is why it works. By the way Lactose intollerance is an allergy to the sugar in milk and goats milk has Lactose too. She had a delayed reaction to her milk because her body didn't want to absorb it. She would throw up between 5pm and 10pm. once she had injested so much that her body couldn't take it anymore. Delayed reaction from delayed absorbtion.
I hope you figure it out before too much longer. My daughter was 15 mo. old and from the time she was 8 or 9 mo. had quit eating. She used to eat a jar of food at eat sitting and just quit. The Gastro. said that her tummy hurt all the time tryin to handle the milk. Now she is the worlds pickiest eater, barely eats two bites even when she does eat, and I feel like the worlds worst Mom for not insisting on more help sooner.
I hope your little one isn't allergic, but it could be worse. We just have to watch what she eats, but there are lots of substitutes out there.
Good Luck and God Bless You in your search for an answer.
Oh, yeah- the Gastro. and the health food store both said that goats milk is the closest thing to mothers milk in the world. -----Don't forget you can always try soy formula if you want. If it's an allergy that should work too!