THC in breast milk?

So my daughter is a month old. a couple of weeks ago I decided to smoke after a 2 year hiatus. I've been smoking at night for the last 11 nights. my problem now, I want to go back to breast feeding my baby. but I know I need to let my system and breastmilk get clean...so how long will it take for my breast milk to get clean? I live in texas, and if she pops up with any THC in her system...well....we are screwed.