no.....as long as it was one beer like every hour its fine. I wouldn't recommend breastfeeding drunk, lol, but thats not really something i see a mom who actually cares enough to ask a question about it....doing.
Your breasts are different that your placenta, the milk ducts take what they need and only a tiny amount of alcohol can really get passed (unlike many other things).they are an amazing filtering system.but it still is a good rule of thumb not to push it and keep the beverages to a minimum.
basically the beer has to finish its "shelf life" in your bloodstream........which is relatively fast. If you wouldnt pass a breathalizer, dont feed the baby.