I just had my RNY gastric bypass on June 29th. Most days I have felt great. Today, at 5 days, I have been experiencing severe pain in my left shoulder. I was told these pains were from the gasses put in my body for the surgery. I was planning to stay off the scale for the most part. However, I weighed myself today. I haven't lost anything! I have followed the full fluid plan that I was given. It scares me to see no huge loss!