Could I have Histrionic Personality Disorder?

I feel like I have Histrionic Personality Disorder. I'm going to make this as short as possible.
When I'm at the center of attention, I do not feel uncomfortable, I'm quite comfortable I would say. But I don't feel I always need to be the center. For example, I have this one class, I don't​ know anybody there, except a few friends. When I have to answer a question in that class, I usually get nervous. What am saying is that it depends on the situation.
My friends tell me I am very dramatic. I'm a male, by the way. They say I usually make them feel uncomfortable and embarrassed. They say they're sometimes embarrassed when around me because I find myself yelling, overreacting and making sexual jokes.
I'm ​always talking about sex, I call all my teachers sexy, and this one time she actually overheard me. Lmao.
I'm always find myself exaggerating a story or just making up stories. I usually lie alot (even for the smallest things). People always ask "why do you lie so much?"
My mood can switch in a matter of seconds. I've been told this by a lot of people. I can be mad and someone tells a joke and suddenly am not anymore. I don't know if that's normal.
I am extremely self centered. I was talking to this girl at work, she was telling me about her problems at school and without knowing, I kept switching the conversation back to myself. I was reading this article online, called 7 things self centered people do, it was crazy how I did all those things, without knowing.
I'm always surrounded by a group of kids in school, because they want to hear me rap, sing or because I'm telling a story. So you could imagine how uncomfortable my friends would feel when I'm just walking in the hallway and some kids from my classes want me to finish that story that I was telling them, or that rap verse, I was rapping.
There's so much I want to say but I feel like this is too much. I just want to know. Should I go seek help?
Do I have Histrionic Personality Disorder?
I know it's mostly found in females but is it possible I might have it?

I know one person diagnosed with this, a woman in her 40's, and she can't string a few coherent sentences together. You wrote a long, comprehensive essay. That is just one thing I noticed that may signal you don't have it.

She bounces all over the place - angry at someone, sad at something else, exploding with happiness at another thing. Constantly changing but generally in a bad mood and angry at the world for not bowing to her every need.

She is also VERY sexually aggressive, always showing off her body.

And she is a terrible listener. She does take whatever you're saying, twist it and make it about herself.

Do these sound familiar?