Hi I am new to this forum, I was diagnosed with breast cancer May 2019. Had lumpectomy June 2019 followed by 15 radiotherapy treatments. I am now taking Letrozole. I have always been an active person but since starting on letrozole I am constantly tired. If I sit in a chair to watch a tv programme or read I just fall asleep! I have a bakers cyst and my ankles, knees shoulders arms ache. I am so hot in bed it is unbearable on times. I also seem to have developed tinnitis. I was dealing with a trapped nerve in my lower back previous to my breast cancer diagnosis and that seems to have got worse. I have also put on a lot of weight and have low mood swings. I was told as my cancer was hormone related I would need to take Letrozole for 5 years maybe longer. Having read up on it it appears it is an oral chemo drug. My poor hubby is losing patience with me as he seems to think I have had the operation etc and I should be myself again. Am I the only one or are these adverse symptoms of Letrozole?