My dear Mrs Fowkes,
Initially, what you are getting are more cravings, your body sending signs saying "Oh no, all the nicotine is out of the system, how will we survive?" these red flags make you believe that you cannot operate without smoking.
Trust me, this time, your body is lying to you. You were not born with a smoke in your mouth, you've lived a decently large part of your life not smoking and the same holds true for the rest of it as well.
You have to work towards moving from one crave to the next initially, so the next time you do get a crave, just give yourself 4 minutes. If at the end of 4 minutes, you still feel like smoking, well, give yourself another 4.
in this interim, watch a funny video, read a small article, watch a favourite scene from a movie you love, listen to a great song, maybe twice, dance like no one's watching (that is if no one really is, unless you can dance, I have to lock myself in a room with 6 metres of aluminium before I can do my version of what's called a dance).
But just get through that crave, and very soon, the craves will lessen.
Everyone you meet on the train will vouch for that. The craves will lessen.
Soon you will see how it's better not to be bound by this habit, and not be a slave to it's whims and fancies.
Just take it and deal with it one crave at a time.
There's some really good advice Nancy gave, and many more seasoned quitters will certainly provide you with a lot of gems. Stay close to the forums, drink up on the knowledge, and pretty soon, we'll be celebrating your first month being quit.
Stay strong Mrs Fowkes, you're better than your habit, you're stronger than your habit.