I've had 5 sessions of immunotherapy and to begin with I coped well , I didn't feel to weary or to achy since the last session I can hardly stay awake . I'm exhausted all the time and my body really aches . My walks are shorter, tasks are difficult to complete .I've prided myself on being strong and positive but now feel maybe I'm doing something wrong . I don't want to appear weak ,is there anything I can do to get some energy back . ?