My DD has been off school for almost 3 weeks now. She has aches/pains in arms/legs, headache, feels hot/cold, sore throat, tummy ache ..all these vary in intensity and at times are very bad .. she is totally lethargic, hardly eating and losing a lot of weight. Took her to GP Friday who ordered blood/urine tests which have all come back OK. I am intending to take her to GP again - any ideas on what I should be asking, can viruses last this long, are there other tests I should be asking for? I would really appreciate some help here ..I know that viruses cannot be treated with antibiotics but I thought most went within a week or so.