Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

Your parents love you, but they don't know everything. My mother thought I was a drama queen. How convenient. She was in her own bubble and had no idea how anyone else was feeling...
Go to the doctor. Tell the doctor. See what counselling you can get, sometimes doctors can refer you to free counsellors if you ask very sweetly. There are charities out there...
Getting a counsellor is incredibly useful because they will hold your hand through the process of getting medication, seeing if the medication works... they're like a pseudo big sister/brother. There to assist you in whatever is bugging you, really. They won't do your homework for you but they will help you with most anything else.
Just take this on as your own task. Your parents love you but they're behind the perspex wall of their own understanding. You as a millennial have to take ownership of your life in this new world, and don't rely on us fogeys from the last one knowing all the answers.