I won't do you the disservice of telling you it's ok and everything will be alright.
5'3 isn't abnormally short, you can find potential love interests. You being ugly is fixable, I can't say what makes you ugly, but it's fixable. The perception of ugliness is caused by you seeming unhealthy, whether you have a weak jaw, weird skin, or by seeming unhygienic. Take care of yourself on a daily basis, work on improving the things that can't be improved instantly, and you'll look better and feel better.
The "joy" of love is an idea romanticized in your head by the media, it's nothing but a sham. But I still suggest you improve your appearance, no necessarily to attract potential mates, but because you'll be able to climb higher in society, which will lead to more money, and by extension give you more freedom. Freedom is what you should romanticize, not juvenile concepts like companionship.
Good luck, whatever road you choose, I guess you can see my choice from the post. I don't regret it so far.