I have had unusual bowel movements since arriving home for the UK two weeks ago. Firstly diarrhoea, then constipation, with some unusual flatulence and now for the last five days watery diarrhoea containing mucus and sometimes solid faeces. I have a lot of discomfort and some pain in my stomach and lower back, some cramping too. I feel tired, have dark circles under my eyes. I have seen my doctor and have sample jars, however tomorrow is a public holiday so won t be able to do this until Tuesday. My grandad had bowel cancer and I am wondering should I be concerned?