URGENTTT !!

So my son was born at 35 weeks he’s now 3 weeks old and technically at his 38 week mark. I’ve been breastfeeding him since he was born but my sisters friend didn’t know that & she brought over edible brownies/cookies that I did not know were edibles at the time I ate a few & I just wanna know if this ruined everything .. is my supply messed up ? I don’t want to keep feeding him and there will be any long term affects in my baby and his development/brain development. Can ANYONE help me ??? I don’t know what to do google has not helped me if anything it’s made me feel like I now need to quit ! 😣