Thanks for the advice. Thinking about it I probably have eaten more nuts in the last few days because I seem to be losing weight quite quickly and wanted to increase my calories. (I am not overweight). I will have to introduce some oil into my diet to keep the calories up but I will definitely stop the nuts to see if this makes a difference.
I will also think about doing a cleanse soon but if it has the reaction to my bowels I expect I am not sure I will be able to stick with it.