While kathyjo is right - you should make an appt with your dr to make sure nothing serious is wrong - I can totally relate to what you're saying. I too, quit
4 1/2 months ago and the congestion and mucus
is still with me and gathering in my throat just as you describe as well as some wheezing. Feels like my sinuses are draining, in fact, I know they are. You may have a sinus infection. A benedryl as well as a decongestant tablet help quite a bit and dry up the drainage temporarily.