Well Not Sure What Sort Of Problem It Is But

Well not sure what sort of problem it is but about a month ago I had bad cold with cough and all the usual symptoms, but now for quite a while I have problem on left side of my throat. Sometimes it hurts a bit like sore throat sometimes nothing hurt but I experiencing having problem with mucus from that site or a bit wheezing. Keep trying to cough it out but still it is there. Sometimes in the morning I can get even cough with little mucus (not thick yellow or so) or just dry. I do not feel any lump or ear pain, eye pain or anything like that just the mucus on my left side of throat.