I've had excessive post nasal drip for years now. Not a problem during the day, but when I wake up, I cough and hack to bring up a lot of thicker yellowish phlegm. I'm 34, non-smoker, otherwise fine health. This only tends to be a morning problem, but lately some days I get this wierd internal throbbing sensation, almost vibrating. It's a wierd twitch that I feel in my chest but feels like it comes up to the back of my throat and makes me slightly clear my throat. Has anyone had this feeling? Also, this morning as I was heaving to bring up the "nights mucuous buildup" fresh blood was there. Would that be from the morning cough and trying to bring up this thick phlegm? After this mornings bout, there has been no blood in any of the post nasal drip, however when I blow my nose, there always seems to be some blood.