Hi, usually a migraine attack precedes aura and can sometimes present without aura or even headache as in your case. many factors trigger migraine and stress is one of commonest. your visual symptoms can last upto 15 mins or so and be then normal, so relax and continue the medicines you are having or consult your physician for a check up.
Hi,
Yes i think what you experienced was visual aura without the headache.Are you taking medication for your migraine? At the same time i would advise you get a visual examination done.