Is this a penetrative orgasm??

I have a very TMI question for anyone willing to answer. During sex, I felt something I’ve never felt before. I can orgasm by cliteral stimulation but today during sex, I think he was targeting my G-Spot area. He also stated he never felt that particular feeling before. Its hard to explain but if I tried to, it felt like such a different feeling and after a while, I felt a tingling sensation from deep inside of me coming in pulse-like intervals and I couldn’t breathe. It kind of felt like I needed to wee (but in a good way - I didn’t need to go at all and my bladder was empty. He said he felt sort of twitches from inside and it was really different for him also. I was wondering if I was on the verge of a penetrative orgasm… sorry and thanks in advance!