Orgasming?

So I recently bought a vibrator and let me tell you, it’s the best thing ever. When I do it, my body gets really warm and my muscles inside start to twitch, it feels amazing all over and it lasts for about 30 seconds. I’ve only done it three times now but it’s the same experience each time. Is this what an orgasm is like, or is this what it feels like right before but I stop too early? I’m just wondering because people always talking about feeling super tired after and I never feel like i need a nap after😂 and also, people always say that they can “feel it coming” but for me it just happens, like my body gets all warm and I feel like I have to pee and then it happens, that’s all the signs I really have😂 sorry if I sound dumb, I’m just making sure that it’s the real thing and that I’m not stopping too early