I quit smoking about 3 weeks ago now (I think). Prior to this I had quit multiple times using the Allen Carr method (which works for me but only for about 6 months or so until I get pissed and smoke a pack on a massive night out).
Anyway, this time round I was outside having a smoke and my 4 year old came out and I caught a glimpse of him watch the cigarette travel from my hand to my mouth and back again, all with a very puzzled expression on his face. And I realised then that I just don't want my kids to be subjected to seeing me smoke. I don't want them to become smokers.
So every time I thought about wanting a cigarette, I would imagine putting that cigarette in his mouth and lighting it.
And this time around I was so proud of myself for quitting because this time I did it by myself, cold turkey and I didn't need anything else.
I've not noticed anything, no weight gain, no cravings, nothing. Only that automatic "I'll go and have a cigarette" and then the jolt when I realised I don't smoke anymore. Then it goes away immediately.
You have done amazingly well to have quit for a week. Your lungs are starting to heal already, you no longer smell, your risk of stroke and heart attack are diminishing already. Keep it up, you are already free, you just don't know it yet.