Did you also know that smoking increases your risk of still birth, sorry just had to chuck that one in as a lot of smokers don't seem to know that fact. Not judging, just informing in case you didn't know.

Anyway, I work with a lady who smoked throughout her two pregnancies. She had completely trouble free pregnancies and births and both kids have no issues yet (they are 3 years and 6 months). Her 3 yo boy does now have some issues with putting on weight though (even though early on he was a real podge) so I'm not sure if that's related.

If you want to give up all you can do is do your best. Good luck.