All in my head

I've been struggling for 6 years to get diagnosed and everyone tells me that it is all in my head. Finally got it confirmed this weekend, even though I have been following a hypoglycemic diet for 6 months already. It has been living hell.

What in the world causes something like this? Is it partially genetic?

I have to move to california from ohio and I'm concerned about driving this alone. I can't study anymore. It's just too much.