Hello , I Am 32 Weeks Pregnant And Want To

Hello , I am 32 weeks pregnant and want to know the safest way to clean my system out for when I give birth. I didn't smoke often but from time to time to deal with stress and to gain a appetite to eat occasionally is when I did . Yesterday was my official last day to use marijuana. I have a little under 40 days till I give birth and want to make sure if I am tested I will pass. I stopped smoking , drinking a lot of water but is there anything else I can take that's safe for my baby to make sure it's out of my system for good ?