I try and revise but it goes through one ear and out of the other and I can't remember what I have just revised. I feel really down because I just don't want to fail.
Exams are a very stressful period of your life and it's okay to feel anxious. Asking for help when you need it is really important, but no matter what, as long as you try your absolute hardest, nobody can be anything but proud of you.
This is one of the main reasons Get My Grades has been designed in the way it has. Get My Grades aims to give students back as much control as possible, making you accountable for your own learning, whilst supporting you and helping you to really understand your content and what it is your exam board is looking for in an answer.
Our Why Is Mental Health Important? series http://www.getmygrades.co.uk/blog/why-is-mental-health-important/ is a really useful place to start as the tips will help you get your mind and body into the zone to be able to work efficiently.