You never know. I was out for some drinks with some people from work and one guy brought his very obviously preggo wife. That's cool. She wasn't drinking. We were having a good time and someone ordered a round of shots and excluded her. For good reason. When she shots arrived, she scoffed and said something along the lines of it's like she's not even there. The person who ordered them said, "did you want one?" and preggo says "well..yeah!!". The father was cool with it, she was cool with it. People are fucked.
One of my exes had a sister who smoked a shitload of weed during her pregnancy because marijuana is some miracle fucking drug apparently. And the sad thing is, if her kid ends up healthy and living a normal life, she'll probably credit that to the weed and encourage it to others.