Here's what you do:
Remember that the most successful people in the world (Steven Spieldberg for example) were unpopular in High School. I was sorta unpopular too, so I can relate. The unpopular class in High School is the BLESSED class, because they are not relying on their lives being all about school. For the really cool, this time is when they learn and sit back and watch how others pretend to be cool (beacause lets face it, they are not really cool at all, they just are good at pretending) and learn how the world works, and in the long run, YOU WILL BE THE COOL ONE.
Most cool High Schoolers are depressed later in life because their highlight of their lives has passed...Be thankful your best is yet to come, and the longer it takes, the more spectacular it is.
I can tell, I am 27, you are OK.