Enlarged Lymphnodes, Fever or Unknow origin... HELP!?

Ok I will try to make this short. I am a 28 year old female and mother of 2. I am overweight and I have some issues with my menstrual cycle (PCOS). I have had enlarged lymphnodes especially the right epitrohclear (sp?) node in my right arm it is about 3 cm long by 1 cm wide. I have had a fever for about 15 days Despite piroxicam and Vicodin with Tylenol. It has been low grade 99.5-100.5, but still makes me feel crummy. I have sweats, join pain, muscle pain, headache. I am totally lethargic, no appetite. I have been seeing and Infectious disease /gp doc I have had every blood test you could imagine. From infectious, Zoonotic, blood cultures, autoimmune etc. The only abnormal results so far is my inflammatory markers are elevated. I have no obvious infection any where. I am awaiting the results of a neck,chest, abdomen, pelvic CT with barium and contrast. I am concerend about Lymphoma. Can anyone offer any advice while I wait. I can't take this anymore.