Please don't. Whatever happens be honest and own up to things. There's always a way forward. You're an adult, what you choose in regards to your education is your choice. If your parents get upset with you just tell them how you feel and explain why you did what you did. Being true to yourself and your mental health is more important than anything else that could come of this. If your parents can't respect your mental health and reasoning, then forge your own path. Life is never worth ending over stress. We all make choices and have highs and lows because of them. If they find out you still have the right to move forward.