Hi, well done for quitting! I quit smoking in May 2011, so I know what you're going through. I can only speak for myself, as you don't specify any of your symptoms, but some of what I had I shall list below. These symptoms began to occur after I'd been 'clean' for about a week and a half- Insomnia; diarrhoea then constipation; feelings of depression and anger (severe mood disturbance); nausea were the main ones. Remember that you are going through nicotine withdrawal and you don't mention whether you are using nicotine replacement products or not, but they can slightly alleviate your cravings and some of the symptoms above. However, all of the above are part of usual nicotine withdrawal, so stick with quitting and remember that if you start smoking again you'll just have to have the horrible withdrawal symptoms all over again. Keep up the good work, hang in there because it really will feel better soon, when you beat your addiction. Take care