Behind the curve?

Good Morning fellow bandsters. I'm beginning to wonder if i'm falling behind the curve? My weight is going down. I'm actually going to schedule an appointment to see the surgeon for a fill. I know they think I'm at my sweet spot but I don't think so anymore. I am able to eat more and I'm able to eat breads again as well. I haven't gone in prior to now becuase so much has been going on. My sister's wedding, the Avon 2 day walk, and two other weddings. So now that things have calmed down we'll check in with the doc and see what he says. I was banded in September and have only lost about 45 pounds. Started off so great and have gone down to a trickle. I have been doing nothing but exercise as I prepared for the 2 day walk. I completed a 5K, did the 2 days (26 miles) amongst other exercises, but no weight loss!!! What's going on?