I was under the impression this does not provide the proof of origin required.

Don't wait until it is too late. I allowed my passport to fill and it was a huge pain in the ass to straighten out. Deal with it now while you still have time.

So I was under the impression that I had three full pages left. I always stay on top of my visa situation and take it seriously. This is nobodies fault but my own, however I had no idea those pages were just for show!

I'm flying back to chiang mai in an hour, I have an appointment tomorrow morning at the American consulate. I will get a new passport, I'm not sure yet what will happen until it arrives.

This shows my problem. Please be aware of this so it doesn't happen to you. There are an additional two blank pages after this but because they do not say 'Visa's' they don't count.

I just got a van to Udon, now I need to decide to go to BKK or Chiang Mai (where I've been staying). I am going to school and have all the paperwork for an ED Visa.

Can anyone confirm the extra pages are possible?

While I did take a TEFL course which included teaching 6 lessons I am not now nor have I ever worked in Thailand.

I got a 7 day extension in Nong Khai, but I'm not sure how to proceed.