Liz, sweetie, breathe...This must be awful for you (and I certainly am in the catastrophising club too so I can empathise) but it's out of your hands for now. Don't give your power over to panic, keep it for your beautiful self. I really don't know what the doc means by "OK", it sure is infuriating, but if it was serious he would be scheduling you an emergency appointment so try and hold onto that thought.
How far away is friday for you?? Can you do anything to keep your mind off this?? (sorry about the diahhoria, I get that when really nervous - I can't spell either!!). I'm glad your mum talked you off the roof (we don't want you falling off anything sweetie)..I hope we can help a bit here too. Keep posting and we will try and tell you some jokes or hold your hand.....wanders over to pick up her joke book...
stay sane Liz, and stay with us, this will pass and you will be ok.
I alone can do this, but I cannot do it alone.