I'm assuming, from what the test lady said, I have BPPV. I also assume this might be autoimmune related as I've never had a blow to the head.

Anyway, just wanted to give a shout-out for the others who said they were struggling with this and again, to encourage you to see an ENT and ask for full testing. It only cost $348, although it took 3 hours. But if it resolves the issue, it will be well worth it!
The lady said she didn't think it was food related, but I did some online reading and found a man who linked his symptoms with gluten. It took a while for him to feel better, but eliminating gluten helped him greatly.