I think I deserved to be fat shamed
Why do you feel that you deserve to be fat shamed?
Because I'm so fat
You don't deserve to be shamed at all.  However, you probably should consider living a bit healthier if you want to live longer.
It's not a big deal.
Taking care of your health now will prevent you from developing chronic health conditions and it will improve your self-esteem. Exercising and healthy eating is a great way to start improving your health.