I'm not sure if this is the correct place to ask this, but here goes nothing.
My cousin, who is about 4-5 weeks pregnant right now, ordered a non-alcoholic drink tonight that was accidentally alcoholic (about 4.5%). She only had a sip before she felt something was off about it and checked the can, but she is completely agonizing over that one sip. I'm not sure if a single mouthful at this stage is enough to hurt the baby, but since all the studies that I could find online focused on pregnant moms that have 1+ whole drinks in a day or week, I'm not sure what to think. Any thoughts?