I am not a Dr. but I can pretty confidently say that you shouldn't vape while pregnant. I don't think we needed to drag frogs into this one.
https://medicalxpress.com/news/2017...-team-e-cigarettes-pregnant-craniofacial.html
https://medicalxpress.com/news/2017...-team-e-cigarettes-pregnant-craniofacial.html