It takes a while for the lumps to disappear, depending on how long you had it and how hard it got will determine how long till they disappear. If you think they're becoming smaller and not becoming worse, stay on this cycle and give it some extra time. If you think they're getting worse, increase the Arimidex to 0.5mg a day and do this for 7 days and see what will happen. Blood work is your best choice definitely.