Hi Debz and welcome. You have made the first move and started a thread on minis. Im assuming you have had diet sheets from the diabetic nurse etc? My sister and a friend at work have had their gallbladders removed too, and sometimes find that it doesnt take much to upset their tummys or set off a bout of the runs. For fear of repeating myself as ive done on other threads, it may help to write a diary on here of your day to day meals. How long is it since you did SW? I do Extra Easy and find it suits me, some still do red and green days, its whatever suits the individual.
It may help when doing your diary to keep a note of anything that upsets your stomach, I know it must be hard with regard to all the fresh fruit etc with your diabetes, but as long as you have your 1/3 superfree with all your meals im sure you can adjust the plan to suit. There is lots of help and support here and some fab recipe threads to look at. If your stuck just give a shout and someone will always help/reply.
I hope it goes well and good luck on your journey. Were all here for the same reason