The major problem I am facing is, I feel like small thin mucus Secretions from the upper nose that drain down internally into throat. This is happening for 8-9 months. This happens all day. it urges me to clear my throat in every 5-10 min in all day. sputum also comes with mucus while mucus drains into throat. It is especially more active after eating some food and morning hours. sometimes while talking also this happens.