My daughter is having fever for last 8 days (38.5 - 39.5) , taken to doctor , did blood test , no infection ,doctor given just paracetamol & brufin(if req) , says viral fever will last 5-7 days . But today is the 9th day(38.4) and has bad dry cough too( promethazine given). Should i wait some more days to see doctor?