My son 2.5 months old..constatly experiencing chest and nose block..what should I do to cure?

my baby's doctor had referred Nasoclear a long time back and it did give good results. ever since i have been using it for both my kids. i also have a steam kit at home which is meant for younger babies. you can easily get them at online stores such as Amazon. if the congestion does not go away in 3 to 4 days, please do consult your baby's doctor.