What is the most likely outcome of overdosing on painkillers?

I know how it feels to be suicidal so please please don't do it! Your only 17 and know matter what you say someone is going to be sad that your gone. Instead of killing yourself just tell the psychiatrist you need medication. I'm 13 and I'm on heavy medication. Also, 80 painkillers will definitely kill you. There's a slim chance it won't if someone finds you in time but even then you will probably be very very messed up. I hope you choose not to do it. :,(