Ay, I'd suggest checking with your pediatrician about that, mama, kahit normal ang cough sa babies, especially pag may phlegm, mas better na ma-assess ng doctor kung ano talaga ang cause kaya nilulunga niya ito. A few of my mum friends had similar concerns at ang doc nila nag-recommend ng proper positioning during feeds or gentle patting, but basta may phlegm involved talaga dapat makita ng doctor para sure na okay lang ang respiratory niya.