Please help me ease my worries!

I took a drug test today at Quest. I'm female, 5'8 and weigh 137 pounds. Was a chronic smoker before stoping at the end of april. Its been at least 70 days since I last smoked. Do you think I have anything to worry about? I feel like I'm fine, but now i have to wait. It was a pre employment test, does anyone know how long it takes for them to process the results? I've heard they only notify you if you got a positive result.