Hello I Am Pregnant And Due In Four Weeks O

Hello I am pregnant and due in four weeks o took a few hit of marijuana three weeks ago and have been drinking lots of water so much my pee is clear everyday I decided to not just stop for the pregnancy but for good. I have not smoked the whole pregnancy just a few hit here and there but nothing for three weeks. I live in Kentucky and was wandering if it will still be in the baby's system when born even if I go into labor tonight and if so will they still involve CP's if I have already quit?