comments of friends???

I wonder about your 'friends,' too. Where were these horror stories when you started losing weight? They may be your friends, but I'm betting they're getting a bit jealous as they see your success!
You obviously have been doing the right things so far -- 127 lbs is no small accomplishment. Continue on your path and pooh-pooh the stories.
Exercise is geat. Do what you can, but keep challenging yourself bit by bit. Don't overdo; you can hurt yourself and/or lose motivation to continue.