I have been reading this site on and off for a while and have read several of the articles which I've found most useful. This is my story so far:
On Monday I came down with a cold/flu. I felt pretty awful Tuesday night, chesty cough and temperature. By Wednesday night, I felt terrible and my lungs felt blocked and wheezy. I could only sleep sitting up and on the Thursday morning, thought good grief this is simply ridiculous, I have to stop smoking. It's something I've thought about for years but never really tried, but this felt like the day. I got through Thursday easily enough without a cig as I felt like death warmed up, so didn't particularly want one. Most of Friday I was wheezing and coughing up mucus. Consequently, I didn't go to work, partly because I felt too ill and partly because I sounded so disgusting.
Today I feel a lot better and I'm afraid I did get a pack of ten when I went to the shops. I sliced nine of them and put them in the bin as soon as I got home and smoked the tenth one. The first thing that struck me as odd was how strong it tasted. With hindsight, it HAD a taste which when I was smoking 20/30 a day I wouldn't have noticed. After I'd smoked it, I was actually quite glad to put it out as it didn't taste nearly as nice as I had anticipated. I also felt slightly light-headed for a minute or two afterwards.
So I got through 48 hours without a cigarette without needing one because I wasn't feeling well. If there were any physical symptoms I haven't noticed as I've been feeling so **** anyway! I'm pretty confident I can continue from here, but I was wondering about this three days for the nicotine to leave your body thing. I've seen it quoted a number of times, and would like to see the evidence for this if anyone has a link to a reputable source. I only mention it because a doctor friend of mine seemed to think it takes much longer than that for nicotine to be flushed from the body.