hello sir, my baby is 14 months old he is getting fever every 15 days or one month , when he gets fever the temperature is 100.5 to 102 , we are consulting 3 pediatrician and done all the tests i.e., blood test test, urine test and all the reports are normal. before getting fever every time he is having cold also, please sir why he is getting fever and cold every 15 days, but my baby is very active he doesn't look like sick, and we didn't given pcv vaccination for baby is this fever because of delay in vaccine or for other reason.