Never orgasmed before

I upgraded to a wand vibrator and now it's so intense even on the slowest pulse that when I get directly on my clitoral , the feeling is so intense I tend to either squeeze or push my kegel muscle simply that as a reflex. I don't know how to just lay and feel the sensation without twisting and turning and pushing and squeezing to relieve the intensity and sensitivity I'm getting. The feeling feels like no other but I have never experienced an Orgasm before.

How do I overcome this and reach to orgasm ?