I also agree with Red Panda. It's all about our low self-steem. One part of the self-steem is self-acceptance. You don't like your self-image so you are projecting your own insecurities in others.
First of all it's to try to enlarge acceptance. Ok, perhaps you don't like some things in you, try to change what you can to give a health image in front of people, but I'm sure you are overreacting. See your good side as well.
Perhaps, you lost some kilogrammes but now, you look fine with any kind of clothes. Perhaps you have black shades around your eyes, but your sight can be fulled of sincerity.

I hope you can work in your self-steem. I used to be worried and anxious around any people but in my last therapy I learnt how to focuss in the task I was doing and try to care less about others.