I gained like 50 pounds when I was pregnant.
I have lost all of it, plus some.
but my stomach looks terrible. Looks like I have too much skin.
i hate it, i'm afraid to take my shirt off in front of people, I'm hiding it.
Are there exercises and workouts that could fix this?
what should I do?
You should have been doing toning exercises while loosing the weight. That helps the skin and muscles contract and get back into place. It would never get rid of all of the excess but would have made it much better.
Now that you've lost the lbs you could try crunches and ab workouts but it might not work.