The staple line in my 1980 bypass broke down and tore the tissue in my stomach; I almost bled to death, but I didn't feel anything. I also didn't really notice that I could eat a lot more. I was passing black stools, but didn't know what that meant, got up one morning and passed out on the bed. Wife took me in to see my PCP and he about crapped when he couldn't get any blood out of my fingers. He rushed me to the hospital and the pumped me full of blood. No one knew at the time that the blood was contaminated with Hep C and I ended up getting that too. You can read the whole story on my profile if you want more details, but the point is I didn't have a clue anything was wrong.
Your surgeon sounds like a jerk to me; I would be looking for a different surgeon.