and this is why googling is a bad bad thing!!
try not to fret (easier said than done I know), but if they really did think leukaemia they would have had you in hospital by now.
there is a mumsnetter here whose DH has recently been DX'd with it (lisad123), and her DH had really high WBC (white blood cell count) and was asked to go straight into hopsital within hours of his blood test.
my DD3 has recently had lots of bllod tests (she was having 2 to 3 per week for 8wks) as she had low neutrophils, and has now been DXd with cyclical neutropenia, and is on long-term anitbiotics to help with infection etc.
I have been assured that altho there is a risk of leukaemia, it isn;t a hugely high risk really and try not to worry. I do, as I am her mum, but it is not at forefront of my mind when I worry. Forefront os just that when her neutrphils drop (hers drop down every 3wks), she is at higher risk of infection and illness.
you dos should be able to explain more, but in the meantime, please try not to worry tooo much.