Am I orgasming?

So I never get off to vaginal masterbation. I have this hand sized back massager (it vibrates) and I use that and run it all over, it usually takes 20 minutes until

It feels good. then I have uncontrollable kegels and it feels really good and that lasts about 15 seconds even after I take the vibrator away. Then

some clear gooey liquid comes out (I’m guessing cum or something), that’s it, no leg shaking or anything. Then, when I rub my clitoris with just my fingers, my legs shake uncontrollably and it feels really good, but it stops as soon and I take my finger away. I have no idea if I’m orgasming and why it’s so different when I do something different. Do you know why? Please let me know. I’m worried there’s something wrong with me.