hi,
First of all, bloody well done for not smoking for a week. Tis hell, isn't it!
I think the second week is actually the worst, so your cravings at the mo are to be expected and not down to your couple of illicit puffs.
Try not to be disheartened, a couple of puffs is NOT smoking a cigarette.
I bet it sent you a bit lightheaded, didn't it? That's because your body IS getting used to being without fags and another few days and you will find that the cravings get less and less. One day soon you won't even think about having a cigarette.
When you get a craving, try to remember that they only last for a minute or so. They really do, you can time them if you like. It just feels like longer.
You've done a week, you can give up properly, it's just another little step for you. Don't let the last week of hell be for nothing, okay, be strong!
If you don't feel up to being that strong, I can recommend nicotine patches. You can get them through your doctor on prescription (although he may refer you to an NHS stop smoking clinic rather than just prescribe them off his own back)
What you've done is slip into the classic trap of thinking "I've all but given up, a couple of little drags won't hurt. I can give up again, I've done the hard stuff once, I can do it again" You need to get into the mindset of thinking about smoking a bit like alcoholism. I will always be a smoker, but at the moment, I don't smoke and haven't for a couple of years now. I know, however, if I start again, I will start again. (iykwim)
Again, well done for doing so well, and good luck for tomorrow.