I went to the breast clinic a 2 weeks ago as I had two lumps in my breast. They did an ultrasound and could only find one lump so did a biopsy of it and it turned out fine. The second lump they just left it and said he wasn’t concerned. Should I be concerned as I’m worried as I feel the lump? It’s to the right of my breast next to my armpit... I am concerned if it’s a lymph node that it may be lymphoma?