If your 'temporary blind patches' or scotomas had jagged rainbow coloured edges, (fortification spectra) ,visible even with your eyes closed then it's almost certainly migraine.
However it's probably only mild: the blind patches are caused by arteries in the optic cortex going into spasm and reducing the blood supply temporarily to the optic area of the brain, reducing visual function and causing the patches.
In full migraine, when this temporary spasm wears off there is a compensatory rush of blood through the blood vessels as the spasm relaxes: This gives the splitting, debilitating headache that goes with full migraine.
However, there are other more sinister causes of temporary restriction of the blood flow to the optic region which can give similar symptoms and must therefore br fully investigated without too much delay.
IIRC the CAA medical branch take a dim view of Migraine in the issue of Class 1 medicals: so you're not going to get much info on migraine from Class 1 holding ATPLs on here as they won't have a migraine history and won't have experienced migraines.
Will they?