I've been with my boyfriend for 2 years now and he used to be really afraid to cum inside but now that he's on leave (he's in the Army) for the past 2 weeks he's been cumming inside every time we have sex. It scares me a little because I'm not on birth control. I mean he wants to have a family with me we just had planned on waiting until later. I'm afraid that I might get pregnant. A large concern of mine though is that even though it's bad I smoke as does my boyfriend and I wanted to know- when do most pregnancy signs appear and is it possible to damage the baby by smoking or being around smoke for it's first 2-3 weeks of conception until I can take a pregnancy test? (We've been having sex for a week before my period and now for the week after and so I have to wait to see if I am going to miss my next one)