If I am ttc and have a beer at 1 dpo is it safe?

We've been trying a while now and it's not looking good. I'm on fertility treatments and monitors, but nothing is working yet. Is it ok to have a beer or two in the first week after ovulation? The baby hasn't implanted yet at this time so there's no umbilical cord or placenta, so it won't cross into the baby...So is it safe?