Does pain ever go away!?

I am A 16 year’s old boy I have been suicidal for almost 2 years now. I am taking depression pills but that isn’t really doing anything to help me. I became depressed because my best friend was killed 2 days after Christmas by a drunk driver who had several DUI. After his death everyday after school I just came straight home came in my room and thought about way I could commit suicide. I didn’t want to stab nor cut myself because of the pain I just wish i had A gun so it could be fast and painless. I’m one of those kid’s who not the most popular but not the kid that eats alone at lunch, I’m the kinda kid that just stands there waiting for people to hopefully notice him. But people that I use to be friends with just  dimmed off year by year and now I don’t even talk to them even if were right next to me. When it’s between classes it’s just painful to see all the other people in high school to school laughing and talking to each other but I’m just standing there looking like a loser. After my best frienddied all I can think about is suicide and how its possible the easiest way to end it all. My best and only friend got killed my grades suck and my mom has to remind me every day how disappointed in me she is of that and my ex girlfriend is hooking up with guys constantly, and she tells me about and I know most if not all guy’s hate it when girls do that especially if you still have feeling for them like me, oh yeah and two weeks about she called me about 6 months without talking and she tells me that she’s dying.