Oh, hon. You're clearly suffering from clinical depression. Whenever our health is compromised it can set that off easily. Sinus infections can take months to resolve - so you may still be ill from that. Please get yourself to a local hospital ER and tell them that you are having suicidal thoughts and desperately need help. Don't leave until someone helps you either. You need a complete physical to resolve your sinus infection (you might have a thyroid problem, apnea, low iron, etc.) and you need to be evaluated by a psychiatrist. Don't let that panic you - there are so many tools that can help you get through this. It's hard to think logically when you're depressed, but you sound like an intelligent, compassionate, kind teenager. We need people like you in this world!! I hated high school and I look back and think 15 was one of my toughest years (17 wasn't that great either!). You just need some help getting through this time in your life. It can be done and you're smart enough and worthy enough to fight through this. Your teachers are there to forgive and forget. Your high school buddies are really focused on their own issues, so they'll forget as well. All that matters right now is YOU! Please get to the ER, or make sure your parent makes you an immediate appointment to see your doctor. Fight for your right to feel ok again. I know you're exhausted, but you CAN do this and you WILL feel ok again. Also, I keep harping on this to people suffering from depression because research has proven these steps, if done consistently, help: 1) Eat healthy (NO caffeine, no sugar!), 2) Exercise (15 minute daily walk, OUTSIDE), 3) Take a daily Vitamin D supplement (helps with depression), 4) Quality Sleep (regular bedtime routine), 5) Meditation (become a pro!). I'm sending you my best thoughts and wishes.