you definitely have to eat smaller meals. One supplement that would be very good for you is digestive enzymes. They will not interfere with your medication. You need these every time you eat. Also you should be taking twice daily on an empty stomach acidophylis capsules as this will help balance out many of the problems that are in your intestinal area. I believe you have intestinal problems not just endometriosis. You can always use a heating pad for twenty minutes to help with reducing the pain.
I suggest following a change of diet for a week and see if this helps.
As a general rule, the grain and cereal foods at the top of this list make the safest, easiest, and most versatile soluble fiber foundations for your meals and snacks.
Rice, Pasta and noodles, Oatmeal, Barley, Fresh white breads such as French or sourdough (NOT whole wheat or whole grain)* Rice cereals, Flour tortillas, Soy, Corn meal, Potatoes, Carrots, Yams, Sweet potatoes, Turnips, Beets, Squash and pumpkins, Mushrooms, Chestnuts, Avocados (though they do have some fat), Bananas, Applesauce, Mangoes, Papayas (also digestive aids that relieve gas and indigestion)
*Please choose a baked-daily, high quality, preservative-free brand. White bread does not mean Wonder.
If you have any questions please let me know.