Blocked Nose & Cough.

hi mummies... my infant is 2 weeks plus, he is having cough n blocked nose... i know its normal for infant to have it during the period of time... no medication for them..accept those nose drip & nasal spray... any mummies exp your newborn with cough n blocked nose? What can i do to reduce the cough? All my 6 kids didnt exp Cough during infant time..only blocked nose... My 1st time exp for my no7.