I Have Had An Operation To Remove Ancillary Breast Tissue

I have had an operation to remove ancillary breast tissue from under both arms ... Since then I have had two aero as which I have had to have drained ... Both arms are extremely tender to touch and appear swollen I have pain in my wrists and top of my hands .... The swelling on my armpits has gone down but I've noticed a hard type of thin cord ?? At the top of my armpit joining my arm ... I also have discomfort when reaching and stretching my arms .. I had the procedure on the 29th of January 2016