Just some info and advice for IBS sufferers who have a lot of pain. Once you have sorted out your diet and excluded triggers, kerrym212 has some great advice on this which she has posted on this blog, I would strongly recommend IntestaidIB which helps to heal and soothe the gut and is a fabulous supplement to try (Boots have it on 3 for 2 at the moment). Although expensive if you are experiencing cramps pain etc it is well worth it.
Also slippery elm if you have constipation.
Strongly recommend you avoid aspartame and other chemical additives as they are toxic to your gut and the rest of your organs.
I am a nurse and colonic therapist and have many years of experience of IBS and treatments