Dustin,
I did not follow the last thread so forgive me if this is a repeat.
If you live at home, you are legally covered under your parents health insurance until you are 19. If you are a full time student you are probably covered beyond that--to age 25. As an 18-year old you are an adult and you are entitled to call the insurance company on your own and ask for a card without your parent's permission. You can call and ask about mental health coverage. And, you can request privacy from your parents. They don't have to now about the call.
If you don't want to go through insurance you will have to get a part time job to pay for therapy.
Good luck.