Marijuana and Psychiatrist Question

So my psychiatrist recently switched offices, so I made an appointment with her new office, they're requiring a urine screen for my first appointment. I smoke marijuana, occasionally, and have smoked recently, so I know its going to pop up, I have informed her I smoke occasionally, because it helps with my bipolar depression and Lupus. Do you think they will still see me even if I am positive for weed? And will they still prescribe me medication? I do not use any other meds or drugs that would come up on a urine screen, simply marijuana, and its more for the medical aspect. I should also add I do live in a state that recently legalized marijuana medically.