Ive looked on the internet to find out about stuff and found I suffer from sever depression. any solution?

I don't want my parents to find out so i probably can't get any medicinal help. i'm pretty sure i suffer from depression. ive checked up on my symptoms and almost all pretty much matched up. i need a discreet manner in which to work. its been affecting me horribly since last year. its been their a while but now my grades are slipping and physical pain is manifesting. i've been to the doctors many times and medicine doesn't work. ive convinced my mommy that it does so it makes going to school a *****.