completed quit smoking for two weeks now..my chest dosen't seem to feel heavy anymore ever since I quit but sometimes whenever I made a certain movement I feel discomfort around my chest.. my left hand felt so tired sometimes and I feel like someone's poking behind my back under my left ribs..and now I have trouble sleeping, would take me an hour to be asleep and always woke up in the middle of the night...I did a blood pressure test and it turns out normal and I dont seem to have any headache or lost weight and the mucus I spit out seems white as normal..it dosen't seem black..has anyone been experienceing these symptoms? I would really love some advice. Thank you and sorry my English is not that good..could it be withdrawal effect? And exactly how long does it takes?