Hey, it's okay.

I wasn't much of an emotional 16 year old, but I'm an overly emotional 23 year old now!
It sounds like you need a less self-centered friend. It's hard to find that type of person though sometimes, but do you have some sort of female mentor/older woman you like that you'd be willing to get emotional support from? I wouldn't ever talk to my mother but I did sometimes talk to other women who were older than me. Still do actually.

Stress makes everything worse, huh? I never did much like highschool, but it does get easier in college/university if you're studying something you enjoy.
I hate body image issues. They suck!
If you want someone to talk to, I'm here. I know it's not as good as face-to-face though.