Weed and breastfeeding

I know I’m going to get negative comments, but I just would like to know if anyone else has smoked a little amount of weed while breastfeeding and how bad it is? So I used to smoke weed before I got pregnant, to calm me down. I have anxiety and it just really relaxes me and calms me down. I stopped once I found out I was pregnant. I gave birth on the 25th and since then my husband is acting different. We have a 2 year old also, and when she was born he was the greatest. But now with my new baby girl, he just sticks it all on me and helps out the minimum he can. So yesterday he took off early around 11am with no phone. Left me with my 2 year old, the baby, AND HIS NEW 8 week old puppy HE WANTED. I didn’t because puppies are like babies, I told him wait until the kids are a little older but nope he wanted it. So I got stuck with a crying puppy all day because it doesn’t like to be alone, it will bark and cry no matter what if your not by it. So I was with the puppy, my 2 year old and new born all day. Alone. Couldn’t call him because he didn’t bring his phone. Probably on purpose. So when I put my 2 year old down and when the newborn was napping (I have monitors for both kids) I went to my porch and rolled a blunt and smoked it. I was stressing so bad, and it was already 9pm at the time, my husband gone all day haven’t hearing anything from him, I just needed it to calm myself. Mind you he ended up coming home around 11pm drunk. But if I only smoked one blunt, haven’t smoked anything else since I found out I was pregnant, will it affect my breast milk a lot? Or a little, or will one blunt not even do anything?