Why am I so paranoid?

Not sure how to explain this but I feel like I have to try. I'm so paranoid about this situation at school. Summer vacation started 2 days ago for me. about a week or more ago I asked my teacher (i'm in 11th grade) how's my situation. he showed me I pass at all subjects except 2, which weren't closed YET. those were history and engineering. at history I had enough passing grades. the teacher must had closed it later. same thing for engineering. a classmate told us the teacher closed it finally. but I'm SO paranoid about it because I didn't see it with my own eyes. what if they didn't? they had no reason to, yet I'm too paranoid. would you feel like this? worried? with no reason but can't think logic?