Coughing/congested ?

Mermaid Ariel

My baby girl just turned 4m she's been sounding congested but nofever she's not fussy sleeps throughout the night .I put some baby Vicks on her chest and now she's coughing a lil bit more I tried to suction it out but she gags .. any suggestions??

Sidebar: her bottom teeth have cut through her gums :) and we aren't having any issues yet has anyone elses LO teeth cut yet ?