G Spot Orgasm

My husband and I have been married and monogamous for 21 years. I love having sex with him. He never has to beg for me to open my legs. He has absolutely learned how to make me cum and sometimes I cum very hard and sometimes multiple times. It is rare for me not to orgasm during sex. Yes, that is a credit to my husband. He absolutely cared enough when we were newly married to learn my body and learn what it took to make me orgasm. So I’m not unsatisfied, but I’m questioning if I’m still missing something. Let me explain. Recently, my husband and I were discussing women who do not orgasm and my husband asked a question. He asked me if I have ever had a g spot orgasm. My question is this. How can I tell? I know I have never squirted , but I HAVE had some extremely intense orgasms that seem different and more intense than typical ones. On slim occasions I literally become unresponsive afterwards. I’m thinking those may be g spot orgasms. My partner is not terribly large and so he fills me almost perfectly. The reason I mention this, is because a lot of times he drops his hips and his thrusting brings the backside of the head of his penis into the anterior frontal part of my vagina as he pulls backwards. This is anatomically where the g spot is located. That’s usually when I orgasm. I’ve always thought that this action stimulated my G Spot and I assumed I was probably having G spot orgasms. So I honestly don’t know if my frequent orgasms are clitoral or g spot relative or both. Is there a way to tell where the orgasm originates? If there is more to explore and experience, we want to do it together.