don't know what to do

I've been so depressed lately. I feel trapped.... I've been having a lot of suicidal thoughts and I don't know who to turn to. I try to talk to my friends but I don't think they want to hear it. Some of them have just started to ignore me. My heart hurts and I feel so lonely. Like no one would care if I stopped living. People tell you they care but their actions contradict their words. I feel like such a nuisance in everyone else lives. I want it to end.