Everyone's build is different, and there's no way for anyone to advise you what your perfect body is like over the internet, unfortunately (and it would be dangerous to do so anyway). I can say that you're about my height (5'1"/5'2") and about 125 pounds, which is well within a healthy weight for your height with wiggle room both up and down. Unless you're really ripped with super low body fat or have a very large build, it seems odd that you'd look sick and have sunken cheeks at that weight, but of course I can't actually see you.
I think talking to a doc/nutritionist/trainer would be a great idea at this point. It's possible too that after losing so much weight so quickly you may have some extra skin, which may be factoring into that residual belly pooch.
Perhaps a better question is, what do you want to look like, and is that a realistic goal? And then once you decide that for yourself, talk to some health professionals about what that looks like for you.