My 6 week old sounds congested all the time. i've used saline drops in his nkse then suction but it does nothing... his nostrils flare too..?

Make a movie: To show the pediatrician (or pediatric ENT or pediatric lung specialists) tomorrow, the parents can make a movie of the shirtless baby's breathing. Show the face, chest, and tummy at the same time, so the doctor can see how everything moves during breathing. A minute into the movie, open the mouth to show how the breathing changes, and close the mouth to show how the breathing changes again.

Nasal obstruction: Likely your little one has nasal obstruction. As long as it doesn't cause your baby significant airway obstruction, he/she will likely grow out of it. (dr kwok's suggestion is a good one) let your pediatrician know about it and if he/she is concerned they will refer you to a peds ent. Who can evaluate and recommend treatment(like steroid drops).

Try this: At 6wk the primary cause of congestion are irritants. House dust, fragrance, perfumes, detergent or cleaning products all leave scents that don't bother adults but irritate a babies nose. A good nasal clean out with saline can remove much of this irritant load, but removing the offending irritants from babies life helps more in the long run.Irritants aggravate colds ; nasal wash helps.