I Have Been Using Thc While Pregnant Because It Has

i have been using thc while pregnant because it has helped with my nausea and getting sick its also helped me eat when nothing else worked im not a bad person for that i love my baby so much so when nothing else worked i started smoking and it worked but im 37 weeks and 5 days now i just dont want dcs to get involved after bith because i have smoked so i can keep a healthy weight and eat good for my baby so i was wondering what i can do to get it out of my system before birth or if not what will the hospital do i live in tennessee and delivering in nashville tn at centennial medical center