Warm tingly feeling: Was this an orgasm?

I know everyone says “when you have your first orgasm you’ll just know it” but I have nothing else to base it off of so help me out here. Last night I was using an external vibrator and three times throughout the session I would suddenly feel this intense warmth spread throughout my whole body, starting at my core and spreading outwards. My vagina clenched and I felt and tingly sensation as well. Do you believe this was an orgasm? It was pleasurable for sure but I wasn’t making any noise or anything. Thanks ✌