Oh,
-
please don't think this. You're not weak, but you're fighting an uphill battle; the higher your ED climbs, the more slippery the slope gets and the further you have to fall. Do you know what that makes you?
Strong. Strong, because you’re having to fight something that’s constantly at your mind. Strong, because you’re going against something you previously adhered to.
Ignore BMI. Fundamentally it's inaccurate due to how it doesn't factor in muscle to fat ratio, body fat percentage and bone structure etc. You are
not fat. And eating 500 calories + a day would
not make you fat. It's a hard thing to accept - but it's the truth. Please don't think like this - overdosing and not eating - they are not the answer. Go into that exam with a clear head: eat something small beforehand so you have enough energy, but something small enough that you are not constantly worrying over it (porridge is stodgy, perhaps this is why you get so anxious? Something light might be better - a quick granola bar or something). You
will do well in this exam; you've been working hard and it's less a matter of revising at this point in time, by all means revise, but don't beat yourself up if you feel you’re not up to it. You probably already know a lot of the content (more than you
realise), it's just a matter of not panicking too much in the exam and keeping a cool head.
I'm sure you'll be okay, and I wish you the best of luck - for
everything.