My 19 mos old has had a head cold for about three days, with no fever but now a loose phlegmy cough, should i be worried?

Effect on lifestyle?: If your kid is playing robustly, resting well at night and the sx bother u more than the kid, simple monitoring is ok. If kid is dragging around, not up to playing, appears worn out or otherwise down, a look over with his regular dr is in order.

Not necessarily: Get him some cough medicine and watch. If any doubt, go see the pediatrician!