Depression question??? (Sorry kind of long but I need help)?

Lately I find myself not being able to get out of bed, I stay in bed all day and just cry 90% of the time I dont know why I'm crying. I have tried going out for walk thinking some fresh air will help but I find myself coming back home 5 mins later. I've also tried reaching out to my friends but their so caught up in their lifes to worry about me being depressed. I am going through some struggles right now such as losing my best friend (due to being deported), I just got out of an abusive relationship and I have court next month which I might have to go to jail for. I've mentioned this to my mom but she don't seem to take me very seriously. I don't know what to do? Should I go see my doctor or will it all pass eventually? I'm so lost I never felt like this, I'm only 18.