See a doctor immediately. You could have a virus, although the dark spots you are seeing worries me greatly.
I have similar symptoms to this. I get dizzy alot, especially if i stand up quickly or stretch, when this happens i see lots of dark spots, like tv interference. I also have terrible trouble sleeping at the right time- I get tired during the day but cant sleep at night. About the dark spots and dizzyness, I went to see my doc and she said it was all down to low blood-pressure, they ran some tests and nothing else showed up. She said it was a common thing and that i shouldnt worry, just take it easy. But you should definatley see your doctor asap just to be sure.
A friend of mine had similar symptoms when she was a teenager. Her doctor told her it had something to do with her diet. I would recommend seeing a doctor.
It could also be visual migraines. You could always post in the Eye Health expert forum too.
As it's just come on I think you should have it assessed by a doctor. It should possibly be checked out anyway.
Maybe also iron deficiency. ?? I'm not sure if it represents a heart problem either.
I don't know. You should get it checked out.