You are not ugly, I know. Any person who is sensitive, caring and considerate, is not ugly! And seems like you have these qualities. And if some people judge you for your physical appearance, do not be bothered or held back by that. Beauty, youth, health, these are short lived things where as character and personal qualities are long lived.
Obesity is something which is of real concern as it brings other illnesses as well. You can resolve this issue with your mind power, will and certainly with the help of any counselor.
Stop worrying, start living, each new day ahs new possibilities and instead of staying away from people who make you feel bad, with your charatcer and soul, make them realise that they did not look at you right in the first place!
All the best!

Regards
ZILCH HOUR