Mary Jane while pregnant!

Ok ladies I have a serious question to all moms that used marijuana while pregnant or before... Did you guys smoke weed while pregnant? And when I say pregnant I mean putting the weed in the blunt and all that lol! Or did you just smoke out of bongs or pipes? 
Just a question heard a lot negative things about it but I am a all for weed! No negative thing about it just wondering how it affects the baby but sometimes that's the only way I can eat a meal with out throwing it up!!! What do you guys think? Negative or Positive answers welcomed