I posted the other day about me possibly having some kind of bug/food poisoning as I was suffering with cramps and Diarrhoea. It continued Saturday, a little bit on Sunday, and yesterday it seemed to go. This morning I have woke up with cramps again and a really strong urgency to go. The Diarrhoea has started up again and really sorry for the tmi, but noticed there seemed to be a bit of black mixed in. Is this worrying and do I need to phone the gp?