First time experience with aura

I am a 56 year old female. I have suffered from migraine headaches for the past 10 years but with no aura associated with them. My migraines have been less frequent and less severe over the last 2 or 3 years and I can usually control my pain with over the counter migraine medication.  Last night, without any warning, I had an aura for about 5 minutes.  I did not develop a headache with it.  I didn't know what it was until I researched it today and realized that it was indeed an aura.  It was so amazing and also terrifiying that I want to discuss it with others who have experienced it. I saw vivid colors and zig zag lines. Afterwards I felt so drained and couldn't sleep last night.