Funny seeing this post as a couple of days ago I started suffering similar symptoms to that of Loubo and just put it down to needing a coil change, but low and behold nope it was the dreaded Lurgy making a rare appearance. Saturday night it hit like a freight train and in the space of about 2 hours I went from just a mildly annoying tickle in the throat to having no voice at all ( me not being able to talk is highly amusing to someone) and coughing till it hurts. So maybe you have the Lurgy coming to visit