Wah, sebulan tu memang lama untuk baby sebaya tu... kesian dia. A few of my mum friends had babies dengan persistent cough atau congestion lama-lama jugak, and most of them ended up going back to the paediatrician a couple of times just to make sure nothing else was brewing, sometimes it's just a lingering virus or sensitivity, tapi better safe to check lah. Since paru-paru dah clear alhamdulillah, maybe boleh ask the doc if there's anything to help clear the congestion faster, sebab tak best tengok baby struggle dengan breathing ja. Hang in there, mummy, tiga bulan tu memang fragile stage.