Have one swollen lymph node in groin, right side. 2cm. been fighting cellulitis in right leg for over a month. is this normal or should i be worried?

Normal reaction: The lymph nodes in the groin, called inguinal lymph nodes, are stimulated and enlarge in response to infections or trauma in the legs and feet. Since you have had an active infection in this area for quite some time, it should not be considered unusual. Occassionally these nodes themselves become infected and require additional treatment.

? reactive lymph nod: Most likely do to the infection in your leg, It's not unusual for the lymph node in the area of an infection to become enlarged. Unusual to have a cellulitis for over a month. I'd discuss it with your physician.