I had the same.
Tested for diabetes when I was 16 and again when I was 22 due to my Dad mentioning my thirst all the time.
The doctors at the time thinking back were not really bothered.I'm now 46 with severe changes retinopathy and as the eye specialist mentioned I was undiagnosed for well well over a decade.
Have now gone from 101Hba to 33 in 9 months and now done even more damage due to dropping to quick,NOT my GP or D nurse warned me this could accelerate retinopathy,BUT with good control it is now settling down and can still disappear,be careful and speak to you specialist about the best way to move forward.