Replying to Speeding Ticket questions

Just got my first speeding ticket. I'm 17 years old so I know that they won't be as hard on me as they would be a year ago, but I really wanna know what kind of punishment I will have. My main concern is that I will lose my license for 6 months. I don't know if that is what happens for a 17 year old though but I know for sure that is what happens for 16 year olds. I have to go to court and I'm super scared that they will do a hair drug test because the last time I smoked pot was a few months ago. I smoke but I don't smoke like a ton a ton. Help would be great because I am freaking out thanks