Sorry this is long, but it does have a point at the end.
I had the same reaction when I first started losing weight. I didn't tell ANYONE (if I could hide any weight loss until I'm done, I would!). Actually, someone I know literally grabbed my arm and forcefully sneaked me away from our group to whisper urgently, "Are you losing weight?!" I was really thrown, but she actually was excited for me (in a weirdly aggressive way).
Then at about 25% loss of my body weight, I got a TON of compliments all the time. It threw me for a loop.
Then I had people begging me to stop losing weight (I was only barely in the healthy range for my height). That hit me kind of hard, because they were people I love (but who I now know knew nothing about healthy weights), but they were so concerned that I let myself fall off the horse and gain 25 lbs back.
Take it from me, don't pay too much attention to the comments and compliments. Say, "Thanks you" or "I've discussed this with my doctor and I'm going to keep going" and move on. Stay true to your own opinions on it. I KNOW I wasn't done losing weight (still had a high fat percentage), and I shouldn't have let them get in my head, even if they didn't mean to sabotage me.
Don't let yourself get thrown by this. You will ALWAYS be you. Some things might change a little, but people do change as things happen (marriage, moving, jobs, children, and even weight loss or gain). It's natural, but you're still going to be "mountain walker" forever.
