Nervous

Okay so I am 12 weeks tomorrow and just have my first doctors appointment where they asked about past and family history ect and I was asked about my previous drug use (I used to be an addict to many things) so I was up front with that and how I had been smoking weed up until I found out I was pregnant (8 weeks) so there is still thc in my system currently and I was up front with the doctors about it but I'm nervous since it is in my system for the first blood test they will contact CPS even though I have since stopped smoking. I feel like I'm making myself more anxious than I should about it