Most probably he found polyps. I had a biopsy too and it was benign, it was also from my esophagus. Try not to worry and just wait to get the actual results. I think if it was really urgent your dr would have talked to you.
When I had my endoscopy I couldn't remember anything after I woke up. My husband drove me home and I remember waking up at home, that was it. He said I was awake and talking at the hospital but I honestly don't recall any of that....I had a good coctail mix!