I don't know where else to go so, here it goes... I always feel really anxious when it's the weekend cause', I know that I'll have classes after they end. My classes are gonna start tomorrow and I feel so freaking anxious for no reason at all. My unit exams are gonna start next month but, they are nothing to worry about so, I don't know why I am so scared. I don't wanna go to class tomorrow but, I don't know why and I feel really nervous. I don't know what to do so, can someone please help? I literally don't know why I feel so overwhelmed over something so minuscule...

TL.DR: I have classes tomorrow but, I feel anxious for no reason at all. What should I do to calm down?