So I've decided to stop smoking. I'm only 23 and I've smoked since I was 15. I also have asthma! This is my first day off them, but throughout the day my chest has been feeling tight and my breathing slightly wheezy from time to time! Is this normal? I really hope I haven't done any real serious damage at my age. I can't help being paranoid about what smoking has done to my health. I also have a wee one who I want to see grow up so this is my biggest incentive to stop. Can anyone give me some advice?