I recall that happening during my quit, too. Overall it got easier as the days went on, but once in a while I would have super strong cravings seemingly out of the blue. Just like you said, there would be a day in the second week that was harder than any day before it. It helps to know that it's a temporary sensation, even if it feels like it's dragging on forever... the quickest way to get out from under those feelings is to not smoke AT ALL. That's what I told myself over and over. The quickest way out of this feeling is to simply not smoke at all.
