Poor girl, try to calm down! I'm sure you can still get the A*s. Have you done the exams, or are you assuming in advance? Because lots can come back to you in the heat of the moment. Can't you do a good three hours now and then have the evening off? And learn 50 words in Spanish/brush up on what you know? That'd give you confidence at least.
I wish people would stop telling hardworking people to get a life or that they're being melodramatic, it's not helpful or useful, you're not going to shock them into growing up in two minutes...you can probably imagine how they feel, just be nice. We're not even in our twenties, and this kind of attitude (feeling desperate when problems crop up) is practically encouraged...