Hi I am recovering from left breast cancer surgery and radio therapy treatment, now on Letrazole for 5 years, now 3 years in and have started having pain in upper right arm radiating up to collarbone and neck as high as my right ear, have had this pain on and off for 3 weeks, now becoming more persistent, have also lost my sense of smell about 99% rarely smell anything these days, again has been happening for past 3 weeks, should I see my GP. Thanks for any advice you are able to offer, Helen Gilmour