For me there seems to be a connection between my intestines and lungs. When my intestinal symptoms are not as bad it seems my lungs are not as bad or perhaps I am able to tolerate the lung infection better. My pulmo also does not think there is any connection. Your symptoms sort of sound like bouts of IBS. It is a vague diagnosis but can be very bad for some people. I am pretty sure I have chronic IBS but I also feel if I could get my lung infection knocked back that the intestinal situation would improve. They do seem interconnected.