Do I have epilepsy?

•My mum and sister both have epilepsy•

My whole life, if a light (sun mainly) hits a certain point of my head I'll have a really severe migraine for the rest of the day.

Example: If I was out in the sun and it hits that place on my head and my migraine forms, if I continue to stay in that same place I'll start seeing patterns/lines and end up blacking out/fainting but I've never had a seizure/"fit" though.

Could this be a form of epilepsy? As I've been told by my mum and manager at work that this could be.

Does anyone suffer from the same? Could this be epilepsy?