Orgasm?

growing
I'm 18 and I've never had sex but I've been masturbating since I was a kid lmao and I'm not sure if I've had a proper orgasm or not? Like I assume you'd know if you've had one but every time I 'finish' masturbating there's like a wave of some kind of pleasure but only once or twice when Ive used something as a dildo while rubbing my clit have I REALLY been like holy shit. So how do you know what's an orgasm and what's just normal pleasure? Thanks ladies!