You just gotta stay strong and stop thinking about the negative and start thinking positive. Easier said then done, I know but, If its getting away for awhile to clear your mind, I suggest you do it ASAP! Fuck seeing a doctor! If your family is going to treat you that way, so be it. Let them live their lives and live yours. Do what you gotta do to be successful and live life to the fullest. I've been in your shoes and had a lot of pressure on me when I became the man of the house at a early age. Trust me I dealt with A WHOLE GANG OF SHIT when it came to family to the point where I wanted to "Give Up." But, I just put myself together and proved everyone wrong with my situation, got my shit straight and now I took care situation and could not be even more happier than before.
I dont know what you, your mom and auntie is going through and it aint my bidness but since it is your mom and your auntie, I guarantee you they love you to death (unless they some cold hearted people), and the last thing to do is to "Give Up." Why pass depression, sadness and STRESS on to them to where they will follow in your footsteps? If you dig what im saying. Keep ya head up bruh!