I wouldn't worry. I am at 14 days myself, and I've felt all kinds of sensations. I was worried for a bit, I wrote down everything I had been feeling and discussed it with my surgeon. He explained that since he had been in there moving my stomach, stitching things up, the body just doesn't understand what has happened and it takes a long time for it to return to normal. During that time, you can feel all kinds of sensations, and you shouldn't worry at all. It's normal. He told me he thinks by the 6 week mark I will be feeling better than I have in years, but healing will still continue after that.
He was very reassuring, and since that talk last week I have felt much more at ease, and I do much better at ignoring every little odd feeling I have. I'm just going to relax and focus on recovering and celebrate every little success during the process (like moving up to eating mashed potatoes, yay!)
Remember, this was not just a little routine surgery. It was a big deal, major organs were moved and modified. Your body is going to take a long time to get used to the changes. In the end, it will be worth it all.