Orgasm? Help please

Girls how do you know if you had an orgasm? Please don’t tell me I’ll know when I have one, because I think there’s something wrong or I don’t know

Here’s the thing. When I masturbate or my bf and I do stuff, it feels really good and gets better and better, crescendo, but it feels like it never ends... if it’s my bf touching me, it’s like that, it feels like if he goes on touching me, it keeps feeling better and better

BUT if I’m alone grinding on my bed, the thing I do is when it feels really good, I slow down, I do that for a bit and then it ends, but not in a bad way, it’s a nice feeling but really light, you know, not like how people describe orgasms!

So I don’t know, what is it?

Thing is I’m 19 and I’ve never had orgasms like those girls talk about, I’ve never had something mindblowing, but I’ve tried everything, I’ve even had a vibrator and it’s still the same...

Please help me