Is this an orgasm?

Ok so I've been masturbating for 2 months. I use a battery-powered toothbrush. At some point during the process I have an episode of intense pleasure where my muscles tense up, my pelvis and my abdomen tense and rise, and my breath is cut. This lasts for about 5-10 seconds. When I put new batteries on the toothbrush, the spin is powerful and this episode happens fast and constantly. If the spin is not that intense, this happens after about 10-15 minutes. Is this feeling an orgasm?

Sorry if this is dumb or long btw

Thanks!