I'd be careful about using that word, because labelling you emotions with such words can lead to dismissing them. Back when I was in high school, the word was "angsty": every teenager had some some "angst" and being "angsty" was just part of being a teenager. Naturally, I dismissed my feelings of sadness, loneliness and alienation as my just being "angsty" and never sought help until my mid 20's.

That said, I would encourage you to keep track of eating and sleeping habits and your over-all energy level through out the day. Depression is often marked by disurbances is these aspects of your life and these specific symptom appear in the DSM criteria for depression. Sleep and appetite disturbances may also be harder for you counselor/psychologist/psychiatrist to downplay and "being a teenager".

Finally, I wouldn't be too worried about drug therapy. Most anti-depressants (with the exception of stimulants) are not known for their abuse potential, so mental health profession are primarily concerned about not medicating patients who do not need to be medicated. That said, if you do have accute feelings of "being on drugs" when you are taking medication, discuss the immediately with you prescriber.

Hope that helps.