Quoting Clarissa Larson:" sure, it's safe to drink while pregnant, just like it's safe to smoke while pregnant IMO If you drink ... [snip!] ... BUT That is just MO because of experiences. Sorry if i offended anyone just my personal opinion. each to their own though. "
Everyday, all day is different than ONE cup.
And no, not ANY amount of alcohol will cause FAS. They don't know how much, but they lean towards binge drinking and alcoholics. Not one who has a cup of wine...also, the 5th week is when most major body parts/etc. are formed. It's best to avoid anything in THAT week.
Alcoholic is min. 2 cups per day NEEDED.
I had a midwife that actually recommended me drink wine to relax later in my pregnancy.