Yes I did have the nuclear stomach emptying study..and one with the rings too (Stitz marker test).. the gastric emptying I took with oatmeal (they had either scrambled eggs or oatmeal..I don't like eggs.. but I had to tell them ..I can't do eggs and then they got the oatmeal) ..I have taken Reglan.. and it didn't work.. tries Linzess and Amtiza (sp?) and they did not work.. finally tried Trulance every AM and it works!! along with c cap of Miralax in the afternoon or evening.. and a VSL3 Probiotic (needs refrigerated. You can get it at your pharmacy or on Amazon.. ships very well .. dry ice packs) I also drink 2 Vanilla Plant based Ensures a day.. 5mg fiber each.. and eat 1 Thomas multigrain Englis muffin with plant butter.. EIGHT mg fiber.I don't take fiber supplements..drink lots of water..I'm going up to 3 time a DAY..which is wonderful..(they wheat have sucralose.. kills your good gut bacteria!! and has plugged me up so bad I had to go to ER.. watch out for it!!) I drink Kinderlite for hydration.. 3/4 8oz glass a day.. Pediatite and gatoraide have sucralose I really watch what I eat tho.. best of luck to you.. I'll pray for you!! I really think God turned on my bowel last Oct 15.. have almost died from Colitis.. sweated out all my fluids..b/p down to 60/40 and the ambulance driver took 10 min in the driver way to find a vein and it took 2 units of fluids on the 45 min drive to the hospital.. have had to get enemas in ER . all of that .. so I know constipation is real!! Praying for you!!