Hey I need help?

I have really been questioning but I was wondering if anyone can help, I’ve read some stuff but idk. I fantasize about fictional characters and say I want kiss or makeout or even do sexual things but any situation where I am presented with sexual situations in real life I get extremely nervous and uncomfortable, I don’t mind kissing or cuddling or general physical contact but idk am I just nervous? (I am a virgin) or could I be somewhere on the asexual spectrum ? I want to date people but the idea that i have to have sex puts me off. I do mastrabate regularly to porn (always a solo person with my genetalia) what does taht mean? Thanks for any help have a great day