my 3.4 yr old son suffering from high fever (102 & 103) since 5 days. After physical examination, doctor suggested for blood and urine tests. C-reactive protine level is very high (92). So doctor prescribed antibiotic. he is also having severe cold with running nose. also we noticed some blood in mucus. doctor told it is normal since cold is there but today more blood is coming with mucus. kindly suggest