Did I have an orgasm??

I'm almost 16 just so everyone knows. Whenever I rub my clit for about 5 to 10 minutes I get this amazing feeling and my vagina and butt start to clench and like open and close a few times. At that point it feels really good. It only lasts for about 10 seconds though, and then the feelings just go away. Some clear jelly like liquid did sort of ooze out and it made me a lot more wet than I was. The reason I'm questioning whether it was an orgasm or not is because my legs didn't like twitch or anything like what most people say they do. I didn't scream either. I was like holding my breathe and my legs and feet stiffened up and my toes curled. So it sounds like an orgasm, but then it doesn't. Please help!!