Hi I'm Pregnant And I Smoked A Lot Of Weed

Hi I'm pregnant and I smoked a lot of weed before I found out . Like blunt after blunt every 10 minutes . It's been 18 days since I last smoked . I stopped cold turkey . But I'm really stressed and want to smoke just once but I'm worried of how long it will be in my system because of how heavy I was smoking. I weigh 112 and live in texas so my main concern is my kid getting taken away from me .