Insomnia has many causes to it. Have you had a sleep study done yet? That will give you an answer to what is causing your insomnia.

Anxiety can *cause* insomnia but insomnia is not a form of anxiety. It can be the result of anxiety, or health problems like heart disease, sleep apnea, segmented sleep, etc.

I would ask your parents to help you schedule a sleep study with a sleep clinic.