Your fertile window includes the day you ovulate and the preceding five days. So, for example, if day 1 is the first day of your period and day 28 is the day before you expect your next period, you'd be fertile on days 10 through 15. (But you're much more likely to get pregnant during the final three days of this window.)
Your body will recover much of the psychological craving, that is, it will stop doing the cravings by 1 to 2 months after you have quit, and then it will be time to taper the pill and the patch.
Nicotine Withdrawal Symptoms & Recovery The first few weeks after quitting smoking are usually the most difficult and it's safe to say that it normally takes at least 8-12 weeks before a person starts to feel comfortable with their new lifestyle change of being an ex-smoker.