How can I bring up my possible depression to my parents?

You are not alone, many people fear opening up to family members about the topic of depression or mental illness. There are many different reason why some may fear telling their parents. The most common thoughts I hear in my office are: " My parents won't understand me", I may cause more problems to the family", "I am worried that something bad may happen if I tell them". 

Depending on your relationship with your parents, inviting them to have a conversation might be a good first step.  If they consent then you can have the opportunity to discuss your concerns with them.  Inviting someone to a conversation and getting their agreement is a great first step. I would then make sure your location of the discussion is conducive to the conversation and once all that is considered it might be beneficial that you make a list of your concerns prior to the meeting.  this can help keep you on point. 

I am so sorry you are struggling!  I do think it's a good idea to share your feelings with your parents and perhaps get some help connecting with a counselor or therapist if you feel that might help.  There are lots of ways to tell them, depending on your relationship.  Maybe saying "I wanted to tell you guys something.. sometimes I worry that I might be depressed." Or, some folks will write a letter, or even send a text.  The most important thing is that you tell someone you trust so you don't feel so miserable. I hope this helps.  Best of luck.