Marijuana while pregnant

I'm going to start out this post by saying that I don't care what your views are, if you have anything negative or hateful to say then just don't say it at all. My doctor is fully aware of me smoking during my pregnancy, and he isn't worried about it. So neither should you. He would rather me smoke than be on multiple medications for depression and anxiety.

The reason I'm posting is because my doctor told me that if I test positive in the hospital the hospital staff will contact cps. I have smoked my whole pregnancy and well before it also. I'm 34 weeks now and I stopped smoking yesterday, because my doctor told me to stop before October 1st. Should I test clean by my due date? Has anyone smoked up to this point or longer and turned out fine? I'm in Texas. I'm thinking that it will be the usual 30 days to get out of my system, but what are good ways to get it out of my system faster? TIA ladies.