I just received wonderful news but my anxiety makes it worse

I'm a college student, I just saw that **I passed all my exams**, I have all the credits to enjoy my summer until October

Professors even sent us our detailed grades, I passed everything

But I refuse to believe it's real. My anxiety tells me that something must be wrong, they most likely made a mistake or sent me the wrong grades. Now I feel even worse

Why the fuck is my brain like this?