According to your phrasing and question, the idea would be that you're in between of your teenage period. Due that, i can say what you experiencing is a normal phase. You're in an exploring stage, the stage that you trying to absorb the world around you and shape your traits and outlook on life.
As you grow, you start knowing more and facing new traits of life. You should know that there's nothing to be stressed about, you need to slowly learn about it and cope with it and shape your own principles along with them.This is life, we have different age periods and each period has it's own life requirements and aspect. Right now, you might feel confused and stressed, cause yes! You face new subjects, you start to get more responsibilities and learning to be on your own. To think about different self responsibilities, to work on your own, pay your own life,your own bills and learn that parents can't be always there and you need to be able to take care of yourself. Learning about taxes,insurance, payments and all these society programs. About life's ups and downs and that it's not easy to earn money and manage life regardless of the current status.
As you state, you can't talk to your parents about it, i assume few possibilities. 1.You might stress and anxiety for talking about it due any reason. 2.Your family going through a life up and down, and you've experienced and seen things that it was maybe a little early for you to face or at the same level, your parents had a serious conversation about life with you and that's why you can't talk with them about it!
(Any reason you have for avoiding communication with your parents about the topic)
You need to know you're wrong! I know you might feel so tension within yourself already! But you need to ask for help from your parents to cope with the new perspectives that you facing, they are your parents, you need to let them know how you feel and they will keep you guided and help you slowly to cope, and if they gone hard on you, they probably thinking it would help you build your mind up about life, which at the end they thinking about your sake, so try communicating with them with no fear)
Well, in the same time, you're going through a strong hormonal phase. Your hormones developing through and that cause more stress and an unstable situation for you. And things goes difficult and messy in your mind. But you gotta know "you have to be stronger when life gets tough" and "nothing last forever, if you having good moments, enjoy it, cause it won't last forever and if you having bad moments, don't be worry, it won't last forever either" you just need to know it's a temporary phase and as you stand strong with your mind and be positive, you'll go through it and you'll feel better by time. Try to remain calm and take advantage of what you seeing and feeling. Don't fear of new life traits you meet but absorb them, know them and go into them and soon or late you'll be comfortable with them and you'll realize those all are part of life and you have nothing to be fear about. You just need to be responsible, organized and take advantage of them. And you'll see it's easier than you could think of.
So just stay strong and slowly start knowing about your life and anything new which you face and cope with them. Enjoy life and make sure you stay energized with a smile on your face :)
Best of luck to ya! :)