thc and pregnant

I'm 35 weeks pregnant. I did smoke marijuana in the beginning of my pregnancy because I didn't know I was pregnant. I mean I really didn't I still am currently getting my period EVERY MONTH ON TIME. I don't understand how but it is what it is. I have been tested for everything under the sun. so I found out at 28 weeks I was still testing positive and at 32 weeks I'm still testing positive. I quit smoking at 25 weeks when I found out. doctor's told me if me or baby test positive at birth children services will be notified. they did say my baby would not be taken over the but I would have a case for a little while. how the hell do I get my system and baby's system detoxed faster? I'm not using and my levels are coming down according to the blood tests. but I feel it may not be completely gone when I am induced in two weeks.