L.H.
My son has also thrown up since birth. He was on every and I mean every formula ever made. Nothing seemed to help. We thickened his formula and he still threw up. When he began baby food he still threw up. Once he started eating solids he would keep all of the food down and only threw up things thinner than the consistency of mashed potatoes. He is now two and can keep down almost everything except for juice and water. He has had an Upper GI to see if he had a Pyloric stenosis. He did not. He had ann endoscopy done that showed nothing and he has been tested for everything from milk to shellfish. Everything has come back normal. We were told that he would outgrow it. We see a Pediatric Gastrologist at the Cleveland Clinic. Her name is Dr. Vera Hupertz. She is an amazing doc and is convinced that he will outgrow this. She has offices at the Clinic downtown as well as Hillcrest Hospital in Mayfield. I would definitely recommend her if you haven't seen a specialist. Also, my son was a preemie as well and he was tube fed for 2 1/2 weeks. I hope that this helps. Feel free to email me if you have any questions.
L.