What Should I do now?!

Since the few papers that I've take in last few days, I really feel no more mood and confidents for following papers. That's because of those papers are damn difficult than last time..T.T

Mathematics subject has gone, all papers 1, 3, 4, and 6, I can said that there's no one papers that I have did well in math. T.T And the Chem. prac and Bio. prac papers, I really almost want to die, because I don't even have enough time to finished it and some more differentiate wrong the specimen diagram that has given in Bio.prac papers too! ( So as a reminder, better don't believe 100% in the tips given! =.=!!! ) ! As most of my friends and lecturers said that practical papers are not so important, coz it's marks for overall of whole subject are not much, so better do well in others papers to gain more marks to balance the marks that we have lost in practical papers...T.T ( As I know that even the practical also can't able to do well, then how I get the confident for following papers leh... and some more those question papers are so difficult and harder than last time, so the probabilities of my confident for the following papers is almost NEGATIVE! =.=lll )

Since it's my last chance, so I'm very worry about that.. worry about my result sucks and make me can't able to continue with degree course later.. Some more, if I really can't do well in the exam, am I really have to stop from studying? Or just simply take some degree courses that I'm not so interest in? Or just give up and tell myself that " not your fault, it's because of you're not suitable in A-level course only.. maybe you still can do well in other course.."? Or I really have to resit for one more semester again?

I really don't know what I'm talking about and even thinking! I'm so confusing now! I don't want just listen those excuses such as I'm not suit in this course or just give up like that! I can't able to believe that I can't do that since I've take the course for almost 1 and half years! How?! What should I do now?!