Can you smoke while breastfeeding??

So I haven’t yet or anything I’m just wondering bc it used to help my anxiety when I smoked weed years ago. I have tried breastfeeding safe medications for anxiety and it hasn’t helped me. I was trying to do some research about if it’s safe to smoke weed every once In a while if you are exclusively breastfeeding or does it effect your baby?? I definitely would not do it if it effects my baby that’s only 3 months old. I’m just struggling with PPA and trying to find something that will help me and my dr just gives me different medications to try and I have such bad side effects with them.