Orgasms

okay so 😭 this seems very weird to me kinda but I jus wanted some advice so I’m gonna post this anomously...

so I have masturbated before and it feels good but i just don’t know when I’m having an orgasms. & it’s the same during sex, like I can never tell when I’m having an orgasm but I know I do cause my boyfriend always sees it on him. I just need some advice on how to know when I’m having one... I’m really confused