Sorry guys/girls if I am posting in the wrong thread. However, I was wondering if anyone has experienced stomach problems after becoming vegetarian. I don't know if this is a fluke thing but, I haven't eaten any meat in 4 weeks. Since that time I have developed bad stomach aches after eating. It does not happen every time after I eat only sometimes. I started to think I may have food allergies that I am unaware of (I am going to see a new doctor next month so I am going to ask to be tested) but, then I read not to mix certain foods since they don't digest the same way. For example, yesterday for lunch I had 2 slices of veggie pizza and a organic salad with italian dressing. I ate the pizza then the salad, would that make a difference? Does anyone have any advice or on this matter?