Hon, diabetes sounds really doubtful. At least for your symptoms. I think that was very good advice Cannabis gave to lay off the weed for a bit.

But truly, I think your imagination's simply working overtime (as it tends to do when you think too much and isolate a lot). Remember how I reassured you about five weeks ago that your throat discomfort wasn't cancer and that you'd live to see another ailment a few weeks later? Well, that ailment has now arrived in the form of slight imagination-aggravated visual disturbances.

Stay busy, be with friends, don't obsess about this, and I'll bet money it goes away. Try and get some extra rest and eat well, too, for a few days. Slight paranoia and obsessive thoughts tend to be worse when you're tired.