It sounds like you're seeing something that isn't really there. A neat exercise some groups do to show women how differently they perceive themselves is to take a huge piece of paper, tape it up on the wall; first draw your silhouette how YOU think it looks. Then have someone else outline your figure. Typically when women do this, they take a step back and see that how they perceived themselves was way bigger than the actual outline.

I used to (and still do to an extent) have horrible body image. I used to keep myself about 20 lbs underweight and still think I was fat. I could never see how guys would think I was attractive. So I had to start picking one thing about myself that I liked. I would look in the mirror and normally go "god I am so disgusting" and I had to force myself to pick one thing about myself that I liked. Eventually I realized that I did really like my own features individually and that helped me see that what I saw in myself wasn't real. It was distorted for whatever reason. And really it was because I didn't like myself on the inside either.

I had to put a lot of work into my issues like jealousy and being okay with not being the best at everything. Once I learned that getting a B is okay and not making the Dean's list every semester is okay....it got a lot easier. I was putting so much pressure on myself and it was killing me.

Hope this helps.