am i orgasming?

ladies!

i'm 17 and have been with my currently boyfriend for a few months now. i recently lost my virginity to him and it was nothing special/fairly uncomfortable, but we also have done a lot of dry humping, during which i've felt a really intense feeling of pleasure around my clit that only lasts for about five or ten seconds. while it's happening i get super shaky and i don't want it to stop.

ive never orgasmed before, and this is probably a stupid question, but is this an orgasm or is it just me being turned on?

xxxxx