WOW. I didn't expect all this support. Thank you so very much you guys!
To be honest I kinda forgot about this thread, which is the reason I'm just now getting back to it, after...three days? Anyway, I'm very, very grateful to everyone who took the time to reply and to give their advice. You've all helped me very much and I feel that I should give an update on how I'm feeling and how my life is going at this point.

I'm glad to say that, since Friday, my suicidal feelings have diminished and I resisted the urge to hurt myself. However, I'm still very much depressed and feeling down over my current life situation. I've been thinking about how bad I've been feeling and wondering if I need to go back into therapy. I'm thinking that I should. However I'm in a very difficult situation. I would have to rely on my mom to make appointments and get me there and back, since I am still a minor and have no way of getting around myself. The thing is, she has other things going on (she has been trying to get disability for 2 years now) and I doubt she would have the time or patience to set things up for me. My dad is now working and wouldn't have the time either. I have no one else to help me with this. So, given my current situation, I am being forced to deal with my depression on my own, with no professional help. It is unfortunate but there's nothing I can do.

Thank you everyone.