I was actually telling my husband after about 5 months, and just shy of 50 pounds lost that I was a bit depressed that nobody had said anything to me. Honestly, I think, that except for our families, and very close friends, people don't even look at each other that much.
Finally, about a month ago, though, my husband and I were walking to the local convenience store, and a lady I had not seen in probably 6 or more months walked past..She stopped, and then said "wow, I hardly even realised it was you. The face seemed the same, but I am used to you being a lot rounder."
I think I smiled all day long.
Grats on your own recognition, and remember..if people dont say, they probably never even noticed what size you were before, or they are afraid to say something cause they feel like it might offend you.
If you can't bite, don't growl.