What is the safest amount of alcohol I can drink in pregnancy?

Zero fl oz. In the United States the recommendation is to avoid alcohol completely.
None. No level of alcohol exposure has been found safe for a fetus. Alcohol easily crosses the placenta into the developing fetus and is broken down into byproducts like formaldehyde, which is toxic to tissue. There is likely some periods ( before the brain is formed) where exposure has less effect on that organ.Yet the total effect adds up over time.