I had surgery July 26th and my first fill last Fri. I feel exactly like you do. I can eat almost the same as before. My doctor said it's not unusual for the first fill to wear off quickly,
but I thought same day was awfully fast! I too have never felt nauseated. Am hoping I will feel a difference after the next fill, which is in two weeks. Am trying to keep good thoughts and ask myself "Am I REALLY hungry?" before putting more in my mouth. Good luck!