Should I do this?

Tomorrow in theology class, we are giving off 3 facts about ourselves people may or may not know. A lot of people who went before me talked about lost family members or deep personal experience. I want to say how I've struggled with depression and anxiety, and the teacher usually follows up with questions to get to know about it more. Now, everybody knows me, but nobody KNOWS me . I have no friends, I just have the occasional person that says hi to me in the halls. I should also add that nobody takes me serious. Everybody loves to laugh at me. I'm really doubting saying it because I think everybody will just start to laugh at me and think I'm bullshitting. I'm just really tired of holding it in, I just want to tell somebody. But, nobody likes me and I'm just scared that if I say this that people will just think lower of me, and pass it off as a joke or that I'm lying. I don't know.