Weird vision disturbance

The weirdest thing happened this morning. My vision was disturbed just like when I had optic neuritis last year but both eyes today were affected. It came on all at once but then seemed to go after an hour. Proper s*** myself as have recently started Gilenya and thought it could be a side effect or maybe onset of a relapse? Also tend to get migraines at certain times of the month so could be that? Am waiting for a call back from the doc but just wondered if anyone else has had this problem? x