Hi Angelica welcome back. A lot has happened in your life recently and when you're already vulnerable,it's overwhelming. I would encourage you to get all the support you can get, talking to a counsellor at school if they have one may help in the short term while you arrange other professional help. When I was your age and depressed I told no one and got no help which, looking back was a mistake. You have done well keeping on going to school, but sometimes a little help can enable you to get more out of the opportunities you only get when young, and, more importantly to get some pleasure out of life which IS possible.
The best and kindest wishes I can send,