Well, first congratulations on losing nearly 50 lbs! Way to go!
I'm not sure what's driving your concerns. It almost sounds like a type of dysmorphia, which is concerning because that can lead to some issues like bulimia or anorexia.
Have you always felt this way, or only recently?
One of the things I do when I look at myself in the mirror is try to find something to like. I'm still obese so sometimes that's not that easy but I've found lately that I love my shoulders. They are leaning out first, it seems like, and so my shoulder muscles are starting to show up and I like that.
Perhaps you could try focusing on the things you like about your body instead of what you hate? Try to begin developing a stronger self-image?
"A mistake is not failure but feedback. -Rod Gilbert"