Yeah, I used to say that, too.

I was wrong. I do have OI, just not the commonest form. Treatment has given me a significant quality of life improvement.
@Sushi kept telling me I needed to look into it, but I didn't understand.

I wish I had dealt with my OI years earlier; I would have had a better life.
Not all OI/dysautonomia involves dizziness or fainting, nor is it necessary to have immediate BP or HR changes. For some of us it takes the 30 minute test to see the abnormalities. I was astounded how hard it was to stand still for 30 minutes -- a clear sign of OI.
Cort did
a very good article on OI which is still available at PR. I highly recommend it to people who think they don't have OI. It can't hurt to read it.