Hello!! I am a 41 year old female. I have been having mammograms since I was 35. I had a mammogram last month and it was normal, like they have been every year, but the radiologist said that I have a swollen lymph node in my arm pit that has been there since my 2009 mammogram and it is unchanged and didn't see a reason for me to come back in but gave me the option to discuss it with my primary care doctor. I do plan on doing so next month when I go in for my check up. My question is should I be concerned about this? The lymph node is, if I can remember correctly, 2.1 cent. I can't even feel it myself and I have no pain or any symptoms whatsoever.Is it possbible that this is just the size of this particular lymph node? I am starting to lose sleep over this the more I think about it. Any input would greatly be appreciated!! Thank you!