Stomach Problems

Ever since I was a little kid I had stomach problems.   My stomach problems seem to come and go but most of the time I haft to deal with it by praying and gritting my teeth.   When I go to a restaurant I worry about throwing up and making a scene.  When everything in my body is feeling ok, I don't worry about it.  But I don't have much control over this.  I've talked to my doctor some about some of my digestive problems but they don't really know anything without running some tests, and even when you do that there is no guarantee that they will find anything.  My doctor told me that the digestive system is a very complicated.  I really don't think that there is anything I can do with my diet to solve this.  This week I decided to cut out all pop out of my diet, and I've done some other alterations.  I'm not looking for a bunch of suggestions, because I've done my research and discussed it in real life already.  I'm writing this because I have faith that God can Heal me of this.  I'm just humbly asking you guys to pray for me.