It’s very tough for you, isn’t it? You’re worrying so much about things which may not happen, and you don’t know the future. None of us do. We just imagine what will happen.
It would be such a shame to give up just before the end, after all that work of the last 2 years.
Try to share how bad you’re feeling with a trusted adult. Someone in your family, GP, school or college.
In the meantime, try to look after yourself.
Go outside every day for a walk.
Get into the sun if you can.
Eat healthy foods.
Try to get enough sleep.
Try to see people who make you feel good.
If you’re revising, take a 10 minute break every hour or so.
You’re still very young, so you will have more chances if you really can’t do these exams at this point. Take care of yourself.