Congratulations Tampaquit!!! One whole week of no smoking!!! That is really, really awesome!!! Keep up the good work.
I know exactly what you mean. Days 1 - 3 were pretty easy for me. After that I thought of them more often, but only briefly - say, a few seconds at a time. Drove me a little nutty too. (I quit 32 days ago, so the memories are still pretty fresh.) During the second week the thoughts decreased pretty dramatically. (So I think next week will be a whole lot easier for you.)
Then things got a little weird. During the third week, I started dreaming that snuck a few puffs off of some ones cigarette. It was so real at the time. I literally jumped out of bed at 4:00am in a cold sweat. I could not believe that after all the hard work I put into quitting that I could do such a thing. I felt awful for about five minutes. it scared the tar out of me.

Then it occurred to me I just had a bad dream and that none of it was real.

Smell the coffee...
The following night I dreamed I had smoked two whole cigarettes. It was really awful. Could not believe I did such a thing. Woke up in a cold sweat. Realized it was all just a dream again. Could NOT get back to sleep. Scared me too bad.
The third night a dreamed I had smoked four whole cigarettes. It was really awful. Could not believe I did such a thing. Woke up in a cold sweat. Realized it was all just a dream again. Could NOT get back to sleep.
By about this time, this routine was getting pretty old and I was getting really aggravated. After five days of this nonsense, I told a good friend (non-smoker) about these dreams. We shared a good laugh about the whole thing. The dreams never came back. Go figure... Guess the dreams needed a little airing out with a friend before they would go away.
I honestly think it was because I was un-learning the habit of smoking. Both consciously (daytime) and unconsciously (night time). Maybe "un-learning" is not the best expression. Let's try it this way. Have you ever heard the expression "If you don't use it, you lose it?"? I guess it's the same with this old habit. You are not smoking any more, so eventually you will stop thinking about it all together. It just takes a little time.
One way or the other, don't let it get to you. You will eventually get aggravated with being nagged to death by the nicodemon and move on to something more constructive.
Kevin__