Does anyone have Migraines that start out with almost blindness?

My migraines have been starting out as extremely blurry vision, almost can't see at all, after that starts to clear up I get really horrible pain in the back of my head that radiates to the front along with photophobia. It is pretty frighting, at first I feel like I'm having a stroke, not that I ever had one, but it seems like it would be something like that. I'm 29 year old and have been diagnosed with POTS.

The hospital did a CAT scan and nothing unusual was found. They said it was a complex migraine but I can't find any info on that.

Any help on what kind of migraine it is would help, and any treatment options.

Thanks so much,
Yuliya

thanks for the advise, I'm going to call my dr tomorrow to try to get a referral to a neurologist