God, please don’t. There’s enough bs out there telling pregnant women all the myriad things they shouldn’t do, eat, etc. Studies have linked Fetal Alcohol Syndrome to binge drinking, but unless you know an alcoholic who should be getting sober anyway, my recommendation would be to leave your friends alone.

An embryo’s brain is the most sensitive to alcohol at about 2-3 weeks after conception, but alcohol can have potentially damaging effects at any time.