am I orgasming?

I'm a virgin with no foreseeable sex life in the near future. I've been trying to figure myself out during this time, just to see what kind of stuff I like, what my bodies reactions are to things, etc. In other words, I've been masturbating a lot (not an unhealthy amount, but yeah...). For a really long time I really couldn't find anything enjoyable about it, I was just doing it to see if I could get that to change. After talking with one of my girlfriends about how to successfully make yourself orgasm, I've gotten a little bit better. I can now get myself to a state of uncontrollable breathing and like a noticeable rising feeling? I don't really know how to describe it. It's nice, but not like "OH WOW" nice. It only lasts maybe 20 seconds. After that I can't get the feeling to come back. I get there just by basic clitoral stimulation, but I have a sensitive clitoris so I typically have to stop stimulating pretty soon after I get all breath-y. Am I doing something wrong? Is this an orgasm?