I think perhaps it is partly because ‘prediabetes’ isn’t really an official diagnosis in the UK - it’s not a formally recognised condition, it’s more a shorthand way of saying ‘at risk of diabetes’ and it’s a terms we have sort of adopted from the US over a number of years.
We have had several members over the years who weren’t told about their T2 diagnosis in a timely way, some for several months or even years, until it later gets mentioned in passing, “That will be because of your diabetes” “Ummmm… what diabetes?!”
So it’s rare, but certainly not unheard of, and it can be distressing for the person involved
Hope you are able to bounce back from it, and begin to make some changes to your diet and levels of activity to steer your glucose levels towards the normal range. Have you been given any advice about how to do that? Have you developed a plan?