I smoked all day everyday up until I found out I was pregnant! I don't think it affects conception at all. Most doctors say it does just so you don't smoke.
My first ob told me it would and also told me I wouldn't be pregnant the month we were trying. I had my chart and did everything at the right time, knew I was gonna find out I was pregnant and I was.
don't think so honestly, I got pregnant with my son and was a constant, all day every day smoker. I smoke every night now to help ease my anxiety to sleep, and honestly, if it doesnt give you the paranoia and helps with stress, it should help. I know they say that men who are in habit of eating the seeds and stems that it can affect their sperm count and slow down the sperm, but thats all I've ever really heard about it. lol