Drinking & pregnancy -- historical question

When did it become widely known to medical professionals that drinking during pregnancy was a bad thing?

Have a scene with a pregnant young woman at a party, set around 1913. She's the daughter of a doctor and would be very familiar with the medical knowledge of the day -- and would not drink if she knew it was bad for the baby. (She's late in the second trimester, if that matters.) I'm not sure if she would even be aware of FAS at the time, though.

(It would be helpful to the plot to have her have a hangover the next day.)

-- Leva

Thanks. I wasn't sure what would be common knowledge for a doctor (or the daughter of a doctor.)

The beverages in question would be fairly good wines, and probably brandy with desert (with desert being a thoroughly pickled fruitcake) in the context of a birthday party with close friends/family. She's not really "drinking in company" as it's a private party. She's just not used to being treated as an adult -- she's an older teen -- and she overdoes it a bit. So she could get fairly drunk without intending to do so.

And, ah, I have ancient family movies of my gramma to prove that women did, indeed, drink in mixed company back then. I'd love to know just how drunk Gramma was when she dropped her jeans and mooned the camera. That would have been about a decade after WW1 ... so close enough. (Granted, whoever was filming tried to follow her into the out house ...)

I got the distinct impression my grandmother -- who was a gracious, dignified lady in her later years -- was somewhat proud of, or at least amused by, that video, when her younger sister found it many decades later and had it transferred to DVD.

-- Leva