I keeping pooping out brown/green water, I know sounds stupid, but I'm worried, cause its every 15-20minutes I have to go to the toilet, I have had any drugs, or drunk alcohol in the past week, so it's not related to anything in that direction, my diet has been black coffee's, toast, chicken and rice, waffles and sausages, I'm a student living at hall, my kitchen isn't the cleanest, but enough to cook in.