> Is there some free clinic I could go to where they'd prescribe me something?

Meds won't solve your problems, the current generation of anti-depressants can only alleviate some symptoms of illness (or possibly make them worse).
Medication is more like the crutch for a broken leg than the whole treatment that includes setting, casting, healing, (maybe re-breaking) and physiotherapy.
If you rely on a crutch, you'll never get better.

That said, see your GP and maybe get a referral to a qualified mental health practitioner. Perhaps from there get one-on-one counselling, or join some support group if you need a network to let you know you're not alone.

> Honestly, it sounds like you're a teenager being a teenager to me

Honestly, that's ignorant.