Hi there Unfortunate!
Even though I would say you are fortunate because unlike so many of us, you DO have a mother who actually cares!
So, do not forget this, because it is important!
Your medical condition will improve once you know what is really wrong with you and you will find out soon enough. It is you psychological condition that I am worried about.
Low self esteem usually comes from a not so happy childhood. Was there a sibling who got more attention, praises and love? Did you have people around you who would say mean things about yourself and your appearance, who put you down in front of others? Think about it. You must have received unkind comments and you made up your mind that those comments were right. Why did you do that? Perhaps they came from people you loved and/or respected?
So nothing anyone will ever say to you will NOW change your mind UNLESS you actually come to question their judgement. Can you think of a reason why they would put you down? Were they jealous, unkind, or fearful of other qualities you have, eg your brain, ? If you can think even of one reason then you can actually start working on improving the idea you have of yourself. Focus on something you like. eg Your eyes, your hair, your skin. If people say you are beautiful, why
should they be wrong? They could be right! Start thinking like this and you are on the way to recovery and to a new self image. Besides, beauty is in the eye of the beholder.!
Good luck and God bless you