Low gpa is stressing me out

Idk what to do, my gpa is about to drop even tho i studied my ass off this semester, my gpa is 2.4 and I'm really scared that it might go worse i might fail one of my 5 classes, 2 of these classes i might get an A in them but I'm scared from an exam i took this morning, and i cant even focus on my next exams💀 i n kiwi e help