Several years ago I received a letter saying I had signs of diabetic changes to my right eye. I was shocked and spoke to my optician who'd done my eye test shortly before my retinal screening was done. She looked at her photos and said there was nothing there. She suggested that slight changes could have happened due to the bad infection I'd had requiring antibiotics, and, if this was the case, then at next year's screening everything could be back to normal. The following year I got the all clear at my screening.
All you can do is try to have good blood sugars so that no more changes take place. Try not to worry too much, as stress won't help your blood sugars at all. If it's only slight changes you have, maybe you'll be lucky like me. Good luck!