I quit smoking the day I found out for sure I was pregnant. Even though I was a much less frequent smoker than you are, I smoked for at least twice as many years, and it wasn't easy to quit. I still think about smoking sometimes (haven't done it once though!) and I know that after giving birth it's going to be like quitting all over again, since I no longer will have the motivator of keeping LO healthy inside me, you know what I mean? Anyway, if you haven't tried it already, just throw out the cigs and force yourself to sit through cravings no matter how much it drives you crazy- the sooner you quit totally, the better. Once you get past the first few days, it becomes easier and easier. Also, try leaving your cigarette pack open so they get really stale, and then only let yourself smoke stale ones that taste nasty. lol Sounds weird but it helps!