What can I do

So i gave my exams a few months ago and the results are coming out soon, I had a panic attack before my maths exam and didn't do well....and not only that I left my id card (which is needed for the exam) at my house and i delayed the school bus, so it took off. My mom called me and told me that my uncle reached the campus, I told them to stop the bus and ran like two streets to get it (ik it's giving hollywood movie plot but it's real) and that made me so tired I was nearly about to faint in the bus but somehow held up...I'm really scared for the results to come out and I wanna get more marks... And while listening to subliminals, should I affirm? What type of mindset should I keep? I'm really confused. how do I stop being doubtful?