My son is 13 yrs but only 135 cm tall should I see a child endocrinologist

Usully, fever is accompanied with increase in the body's temperature, weakness and body ache. Incase you feel any of these symptoms, you can take a Paracetamol. If the fever doesn't subside or keeps reoccuring, contact your doctor immediately.

No, it is not safe to smoke or take any kind of drungs when you are unwell. If may have extensive adverse effects as your immunity is already low.

bone marrow is not indicated in this case. is there any history of fever or body ache? if yes, then since how long?