true influenza is respiratory not intestinal so i would be conerned that your mucous secretions would be related to an infection or inflammation in your colon. there can be many different reasons. yes you should be concerned. see your medical provider so that you can be properly diagnosed and treated.
i am female had the flu for a few days w/ diahrea. i am having a mucous secreation from my rectum. should i be worried. i've had the flu with diahrea for a few days and now am having unexpected secretions from my rectum that look like mucous. i have what feels like an "accident" and is embarrassing and disgusting. should i be worried?