While I've not had any diagnosis yet, I'm beginning to think I may have depression. This started last year when my mother passed away and it's only gotten worse since. I've lost all interest in my hobbies, my grades at school have been rapidly declining, but I've stopped caring. I've been completely isolating myself too, ever since last December. I've also frequently wished that I could just somehow fade away from existence, because I don't matter. To anyone reading this, does it seem like I could have depression? Part of me thinks yes, everything I've read about depression seems to match with what I've been expecting lately, but  some other part thinks that I'm just being overdramatic and that I just need to shut up and stop complaining.