I know what that’s like I hope that you all aren’t still together. As bad as that sounds it’s best to separate and get help first.
Hun, it sounds like you are going through a supreme lack of support. Your mother is- well I won’t get into it-I just really hope she comes to her senses before too long, and your friends decided to not be good friends and you may or may not have a girlfriend?
I totally understand why you would be so depressed and lonely.
Sweetheart you need to get out there and make new friends ask about your school having a LGBQT community or join some facebook groups. I wish I could give you advice with your mother, but I haven’t had that experience. Sexuality is a touchy touchy subject and older generations just honestly do not get it. Not all of them are all that accepting. It takes time to get them to come around.
Normally I would harp on seeing a professional, but in this case you need friend therapy. You need to meet a bunch of new people and get out there and start hanging out. If you sit at home all day by yourself in your room on tumblr you will be so mind numbingly bored and depressed you will want to jump. Trust me I have been there and done that.
If you’re not sure about meeting new people try getting a part time job or volunteering at an animal shelter. It’s hard to feel depressed when you are taking cute little puppies on walks or making people drinks (I’m a barrista) and tons of cute girls come in to get coffee so you may score some digits.
And you can always come and talk to me, I’m not gay myself but I am very knowledgeable about the gay community and plus I think that lesbians are little cuties and should be praised and loved and not hated on.