Edibles and breastfeeding??

I've smoked cannabis less then 3times my whole life, and never while pregnant. I have had the occasional special brownie or cookie. Now I'm breastfeeding exclusively, an considering having another special brownie. Anybody have any knowledge, experience or advice with bf and edible marijuana??

Update: thankyou for all your responses. At first I thought there was a difference in smoking it and eating it but there isn't (much). As many of you and other internet research points out, the stuff would store in my breast and would undoubtedly go to baby. Even if I pumped. I've decided it's not a good idea and sour be using for a while and that's perfectly ok. :)