I'm 16 years old and am being charged with three felony counts of reckless endangerment(one for each minor in the car), one count of reckless driving, and one of a suspected marijuana-induced DUI. I do not own a license or a permit.

I was driving my girlfriend and two friends home from a party, because I was afraid otherwise they would have driven home with a drunk driver and possibly lost their lives. I didn't want that to happen. Anyway, I had smoked marijuana around 10PM and was on the road at around 1:30AM, and was (by my perception) completely sober.

I'm not an experienced driver by any means and was driving at night on a windy road with faint lines. I admit I was weaving a bit, but my girlfriend's car has horrible handling (extremely loose) and always weaves to the right for no apparent reason. Me, not being an experienced driver, was trying to constantly correcting this. I was also speeding up and slowing down (pressing down on the gas pedal and then releasing it to coast). There was 9-1-1 call from a car following us that suspected me to be driving under the influence.

I was pulled over by a police officer minutes later. I was arrested on suspicion of driving under the influence of marijuana. I failed two sobriety tests(the two leg ones), because because my muscles were so damn sore from playing basketball. Funny thing is I passed The Horizontal Gaze Nystagmus Test. According to the officer (who apparently is a Drug Evaluator Expert, so he can testify in court as an expert) my pupils were extremely dilated.

When I was brought into the station for booking, I took a breathalyzer with 0.00%BAC. I also took a urine test.

Now here are my questions:

What are my options?

If ANY amount of marijuana shows up on the urine test, is that enough for a DUI conviction?

What is the amount of marijuana that is needed to be found for a conviction?

Thanks for any help!