I just found out my friend died and now i feel like ny life isnt goonna get any better?

First off : i'm naseuous and i have a tempature.and people on facebook keep getting mad at me and i feel like i have no one left. i cant do this anymore. it seems like everyone would have a better life without me. my friend died ina car crash ive been crying since 5 or 6 in the morning. my mom brought me some micdoonalds and now i feel like im gonna throw up. and i have a somewhat high tempature. and most importantly , i have this undying guilt because even though he was my friend , i was ocasionally mean to him and now i feel so guity. i found sleeping pills in my room and i want to use them today. i dont think life can get any worse.