Hi I dont know if you will get this or not but I saw your post from 10/30/2009. I have the same problem as you, extreme stomach pain after eatting any red meat, bacon, smoked ham, sausage...chicken, pork chops are fine. I also have had every test known to man and they cant find anything. I have had this now for about 7 months. Did you ever figure anything out? I would love to hear from you. Thank you so much!!