Oh crap! That sucks, Laura.
But, on the upside - you have a diagnosis, so at least they can start treatment instead of constant prodding and poking and trying nasty meds. And soon you might be able to sit down and eat a normal meal without feeling so awful afterwards! And eating well means more energy and finally feeling fit for those work shifts, too. I think this might be a turning point for you!
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36/F - 1984 SAA treated with ATG [complete remission until] Oct 08 - burst blood vessels in eyes and low platelets; Jan 09 - AA & hypo-MDS; July 09 - BMT (RIC MUD PSCT) July 10 - 10k for Anthony Nolan (1yr post BMT! 53:48) Sep 10 - Wedding!

I've run 5 marathons now!! (PB 3:30!)