Drug testing

Let me get one thing straight. I do not do drugs, especially the drug I am referring to. I recently moved back in with my parents, who smoke pot. I am never in the room when they smoke it, nor do I see them do it. Although sometimes I can smell it- and I close my door.

I'm wondering if that's enough to prompt a positive drug test. My ob does urine samples everytime I'm there, and I'm not sure she even tests for drugs but I wanna be safe.

Helppp