I'd also like to refer back to @mogulfield's post where she attached a Daily Fail link. It was unfortunate that you used that particular source, but it refers to legitimate research carried out by Professor Peter Hepper from Queens University. I've read his earlier research, which has looked at the effect of heavy drinking during pregnancy. His current research is looking at the effects of low level drinking in 18 week old fetus'; so 2.5 units per week, which is one of those little quarter bottles of wine for example.
Anyway, when the Daily Fail referred to babies stopped breathing it was rightly picked up here as a nonsense as babies don't actually breathe in utero. What they do do, however, is breathing movements, where air isn't actually inspired, they are more like practice movements in advance of birth. After drinking as little as a glass of wine, these movements stopped and didn't return for 2 to 3 hours.
Also, babies are in a constant state of fluid movement in utero, all totally normal and what we want to see. After being exposed to alcohol a startle reflex was eliciteded in the babies, causing them to 'jump' regularly. So they were quiet, not moving and then they would jump.
And as if that wasn't enough, there was more variability in brain function found in fetus' exposed to alcohol when compared to those who werent.
There was actual video footage of this in the link I posted earlier in this thread. Interestingly, this video was poo-pooed because it was produced by NOFAS. I mean, how anyone could have an issue with information from the National Organisation of Fetal Alcohol Syndrome is laughable. They kind of know what they're talking about, don't ya think? Of course their agenda is to reduce cases of FAS!
Research, you see, is ever evolving. We don't have all the answers as yet. But, research like this shows a direct link between alcohol and fetal wellbeing. That's every drink. This is why I would currently advise no alcohol throughout pregnancy.