Hi hun, welcome to RYL :)
I can completley empathise with you, I really can.
Suicide is not the answer though, have a look at this thread
here, its really well written and will hopefully make you see just what suicide does to those around you. There is no quick and easy fix for problems like this, you need to talk to someone, a friend or family or your GP, then they will be able to help you and see what the best way to fix things is.
Give me a poke if you want to talk, im 19 as well :)
Take care
Aimee xx