I ve had a fever, slight cough, stuffy nose, and upset stomach- normal cold stuff. Lately a bit lethargic, so I had been laying on couch for a bit, when I got up I felt dizzy like when I m normally I ll, but my vision also flashed purple tinted, it was like I had violet glasses appear then disappear a second later. This seems very odd and has never happened to me before, it feels worrisome.