Alcohol

My pediatrician said to wait one hour per drink/shot of alcohol that I have before breastfeeding my baby again... I usually drink 3-4 shots once or twice a week. My child hasn't seemed to be negatively affected in any way, but I still worry because of certain articles on the internet saying that my child will be developmentally delayed, or have other issues, and that it is hurting her. I'm just wondering what your pediatricians have said and if I'm a terrible mother! I feel so guilty for drinking now... And I don't know if it's too late and I already caused damage. Thanks for your time!