Welldone for making the change!
I stopped smoking in October after 17 years of smoking and untold numbers of attempts to stop. I used nicotine replacement mostly during my last pregnancy although I did slip up a few times so although getting pregnant is a great trigger for some people to stop, it certainly doesn;t work for everyone.
I am however evangelical about the method I used to stop. 'Alan Carr's easy was to stop smoking' costs around £5 on Amazon (less than a packet of ciggies or a replacement canister for the e-cig). A mate at work went on about it for a year, I read the book to shut him up. Have not smoked since. Don;t even have cravings for it.
It uses a mix of obvious facts and NLP (neuro-linguistinc progamming) to give you all the tools you need to stop smoking. For example 'managed to cut the down' implies a sacrifice, as does quitting or giving up.
I am the last person to judge, as I said, I slipped up more than a few times in my last pregnancy and more by luck than judgement maybe, no harm was done. However I do also know that there is a lot of pressure on pregnant women to stiop smoking and that pressure in itself can be stressful and used as an excuse to carry on - I was nagged for years to stop before I did and it just made me more stubborn that I was going to carry on!
I know its not amazing as shouldnt be smoking at all but this really is great progress Id encourage others to try one too definately 
