Hey man, I did mine this time last year (now doing my A levels) and tbh their not too bad, best thing to do is not to worry and you'll do fine. Heads up and be confident Tip: Never leave a question blank, always answer even if you have to guess!
I am. I have 6 exams over the next few weeks - biology, physics, chemistry, maths, and 2 geography papers. I'm pretty confident that I will get at least an A in all of them (not trying to seem boastful but it's the truth). But I'm still a little nervous; as anybody should be. If you put in the appropriate work then they shouldn't be a problem whatsoever.