Hi, I have noticed a painless lump in my nostril few days ago, but this is all- I had flu like symptomps for 2 days, but they are gone now. I am a bit worried as it says if it is in one nostril it is red flag. Obviously I don't know how long it was there, it is not like you check inside of your nose everyday. I did send a message to GP so expecting a reply tomorrow (Monday), but just want to hear from others. I do hope it is just polyp, but on the other hand I never had any allergies, any problems like that, so I am a bit worried.