Hi Jude
Have any health professionals ever mentioned to you that diabetes can also contribute to, or even cause, IBS like symptoms?
If your blood glucose levels vary a lot, your system will struggle to digest food. That can cause diahorrea/indigestion/wind/pain etc, just like IBS does.
For example, if your blood sugar levels are high after you have eaten, the food you have consumed will not be digested as quiclky as it should and will therefore develop gas in your gut and make you feel bloated and uncomfortable.
Problems with your digestion can also be a complication of diabetes, but then also, keeping blood sugar levels stable will minimise the symptoms. This is a complication that is not, in my experience, mentioned by diabetes nurses/doctors, but it does exist.
Have you tried replacing the bread you eat with something else, such as potato or rice? Bread seems to often be a no-no if you suffer from IBS. I have a very sensitive stomach and I use probiotic products to keep things under control. I know there isn't enough scientific evidence and it may be placebo but they do work for me. I find natural yogurt is great also.