I’m so confused

Back story; in February I started having chronic symptoms of tachycardia, dizziness, lightheadedness, fatigue, blood pooling in legs, pre-syncope etc. Had a few doctors tell me they were 90% sure it was pots.

Well today I had my tilt table test, I was feeling pretty asymptomatic today and yesterday, and they gave me the nitro to help flare me up and they said it was vasovagal syncope.

But my understanding is that you have to actually pass out?

And would VVS also cause the blood pooling?