THC detox at 37 weeks?

Anyone here smoke weed while pregnant ? Could you clean your system in 2 -3 weeks from THC ? From Ohio here, they only test babies f you test positive I KNOW THIS FOR A FACT this is not my first child 🤦‍♀️ my doctor has told me babies are ONLY tested if mother tests positive. Not sure if anything will happen. Having the baby in 21 days and I quit smoking today. Wondering if anyone else has gotten clean in 3 weeks time while pregnant or if there’s safe detoxes.

P.s. no negative comments please. What’s done is done. Weed doesn’t hurt babies and there’s zero studies to suggest they do. Just looking for positive stories and what you did you get clean late in pregnancy before delivery. Thanks (: