What should I do about thinking I'm mentally disturbed?
Why do you say you're mentally disturbed?
I say and do things that don't make any sense.
If you are acting that way then you probably are mentally disturbed and it is not okay to act in disturbing ways. Acting disturbed will worry other people.
I just love the feeling of being weird.
You should at least try and work on it, even if you love the feeling. It'll make it harder for you to form long-lasting connections with others if you act disturbing all the time.