help!!! I have a similar problem. i have a lump in my lower right breast right by the armpit sorta, it is very painful and makes my arm hurt, i went for an ultrasound and was told it was a swollen lymph node. I didn't really know what to ask so i left. i had no further results or calls from the doctors but it does not feel like its getting better, it goes from dime to quarter size daily and makes my back extremely stiff and is extremely painful... any advice?