How is your fat intake? Is there any foods that you notice trigger this more often? Do you use artificial sweeteners? Have you recently lost a fair amount of muscle mass? Do you supplement with digestive enzymes? How are your stress levels? Do you have any food allergies or intolerances?
These could all be factors that could contribute to the problem, think about each one and if you think something may be significant try changing it and see if the problems persist. I had this problem for a little while and Anabolic Pump by USP labs seemed to help me because it lowers the amount of insulin your body will produce over time.