if this is depression it is a decently light one that can definitely be treated with therapy and trying to establish good habits. Medication should be a last resort for people who seem to have brain chemistry problems. but if you just dont have hobbies and experience little of the world, it is normal to fall into a kind of vegitative state. i was like this all my childhood and youth. Kind of depressed ish, but still able to function and considered myself happy (i think it was a bit like dysthymia, maybe look into that). then i had a really bad depressive episode and after clawing myself out of it i realized that i am much happier now that i have changed the things i wanted to.

are you in USA? because in a case like this i dont think medication would be the right path unless you were there where doctors get bribed to prescribe more. I personally treated my low mood with weed for years and let me tell you: using substances to bandaid low mood caused by an unexciting life only makes it worth since you can life for years leading that life. Better make the necessary changes now.