I gave up while I was trying to conceive but then caved and started again. I had been smoking for about 3 or 4 weeks when I found out I was pregnant. I was so determined to do the best I could for this little one so I stopped straight away. I miss it occasionally, but I have something much much better growing inside me now, and that is my motivation. It hasnt been nearly as hard as I thought it would be, I actually miss ham more then I miss smoking