<s>[INST] my baby is 6 weeks old, it has been 3 days he had difficulties breathing through his nose .his nose seems blocked .i used saline water to blow his nose but no mucus is coming out. shall i take him to the doctor or use nasal spray.can it affect the lungs later on? [/INST] blocked nose can be treated with saline drops 2 drops in each nostril 4-6times daily but if not getting treated you should consult your doctor </s>