Think of all the women who are already on anti depressants and don’t know they are pregnant for 6 to 8 weeks.
A woman is suspicious she's become pregnant way before that point. A lot of those ads for other stuff on TV include "if you're pregnant or might become pregnant...." in the list of those who shouldn't take the drugs. I would've assumed such retrictions were on anti-depressents, too.
The problem with "crack babies" has been known for over a generation. Why would these other drugs be any different in those effects?