If you do research about tums and other such meds if i remember correctly they cause more harm in the long run.
If you want to figure out which foods cause it you need to keep a good diary of everything you eat. Many people tried that but if you truly want to figure it out the root of the problem you need to analyze not only what you eat but what you ate before it.
For example: If you are hungry and you eat french fries it may cause a problem but try eating it when you are half way done with your burger and it might just be fine.