depressed and anxious

so I'm a junior in high school all of my friends were seniors, so they all graduated and moved away. schools out now so I can't see anyone on a regular basis. my mom and dad are always working so I end up stuck babysitting my little sister literally everyday so I can't go out and make new friends, I can't drive. so I end up sleeping for 15+ hours straight because I have nothing better to do. I recently just had surgery on may 18th for endometriosis. I've had no motivation to do anything what so ever anymore. my school said to my face I was disabled because I have anxiety and depression. I have no interest in anything anymore.