So for the vaping, my sister was a smoker when she was pregnant and at her 12 week appointment she had to see a specialist nurse (can't remember what her actual title was) who basically had a chat with her about the risks to baby and how important it was to quit, she was trying to anyway but that gave her the kick. She suggested vaping as alternative as they see it as the better option out of the two, obviously neither is the best but they do see vaping as the better option.