i have copper t on for 8yrs.right now i am not pregnant but breast milk comes out and fills my breast and i feel pain i get relief when i express it i have a node under my right armpit the dr.said there is no lump in my breast .the node pains sometimes could it be an infection if it is what kind of infection the pain extends to my hand the dr said if the milk dries up the node will dissolve.i am worried pls explain