“When should you see a doctor about anxiety?”

I am sorry to learn about your anxiety. Symptoms of anxiety can be related to a variety of medical, psychiatric or psychological problems. Anyone experiencing distress from anxiety would likely benefit from addressing them with their primary care physician or a psychiatrist as an initial approach to care. I am not giving you specific medical advice since I am not your physician and lack specific information about you. The guidance I offered is in response to a general query and not your own personal health. Best of luck.

You should see your doctor ASAP particularly at this age.

If your anxiety is frequent and/or significantly disturbing then you should seek help.