The lymph nodes can become enlarged with many kinds of infection even if it is a bronchial/lung infection especially if the system is overwhelmed fighting off the infection. I would call to let your physician know in the meantime of this new symptom so they are aware in case they think something should be done, such as a blood test to check on the infection or to ease your mind about the other thing.

When I had pleurisy, my armpit lymph nodes swelled as did the ones in my neck, so it may very well be the case that it is due to the infection. Focus on getting better and sending the biggest of well wishes your way!!! (((((Lynn))))