Nux Vom is a tissue salt taken as described. Not sure about the use in pregnancy. When I lived at home Dad had a good supply that I would use for my hangovers lol. As a child we would also have similar for bruises - Arnica & another one for burns. Can't think of it's name off the top of my head. Thank you for reminding me though my Dad has been telling me to get some of the ones for burns. Will have to remember to ask him the name.

Sorry not much help.