Ive been feeling really self conscious lately about my appearance, I just feel like everyone else is staring at me when I go out, Do you ever feel that way? 
sometimes i do, especially since i gained a lot of weight
Yea my heightened sense of self-awareness really makes me freak out, I often thing the feeling will never go away. 
is there anything you can do about it? is there any treatment?
Well I definitely know that it can heavily impair one's ability to perform complex actions. So I know that there is therapies for it and even medication. 
Have you ever considered taking a medication or talking to a doctor?
I have but I feel like ill be a zombie if I take the medicine, I probably cant afford the therapy sessions either. 
that's what i'm scared of too! feeling like a zombie. I'm struggling with depression but still didn't go to the doctor
Well I'm 17 and I know that adolescence is considered to be a time of heightened self-consciousness. I just hope I can get over this feeling. 
i hope so too! And if not i hope you will seek professional help.