I have had a cough, running nose, congestion, about 2 weeks; yesterday i had an uncontrollable diarrhea, very very foul smelling, very mucus and green...one time only...Just had eaten an egg bacon cheese biscuit...Today, my diarrhea is yellow, not as mucus filled...my cough is better and my nose is better, as well as congestion...What would cause the horrible melling green mucus diarrhea then yellow today?