Very irresponsible of you to ask that question to people in an Internet forum who aren't doctors. So far your off to a bad start as a mother by needlessly risking the health of your baby. You can't even eat seafood while your pregnant, you expect vaping to be safe?
Ask your doctor.
Wow, that's a bit judgemental. Of course, she should speak with her doctor, but there's nothing wrong with asking people who may have gone through a similar situation for advice.
Btw you can eat seafood, just want to try to avoid those that are likely to have high mercury content.
OB's are not different from other doctors, what they say will be colored by their own views, which may or may not have basis in medical fact. Hopefully the op, and any woman who gets pregnant, has the opportunity and means to find a doctor that is a good fit for them.
Do you have some specific reason to believe intermittent low level nicotine exposure during pregnancy is such a horrible idea? The study I posted, while somewhat small scale, seems to suggest no adverse affects on gestation time or birth weight.