Could I be depressed?

Lately, I've been feeling unhappy. My appetite has decreased, I've lost weight, I've been having trouble concentrating, I've been crying a lot, and I've mainly been feeling very, very sad. I've tried to push it back and ignore it, but it's become very prominent over the last week or so. I don't know if I should talk to my parents or... I just don't know what to do. Please don't leave any rude opinions, I can't deal with them right now. I just need help.
Could I be depressed?
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