I have vaped since before I got pregnant. I have worked in the vape industry for 2 and a half years. All the studies I have read coming from a med student I would never put anything in my body that would harm my daughter. So no it does not hurt your baby the main two ingredients are vg and pg. I understand it's a new topic but vaping is not harmful to a baby.
I don't know if enough has been studied about it. It is unregulated so it's hard to tell.
propylene glycol an vegetable glycerin. Vg is where you get the flavor