I have heard of this disorder, believe it or not. I believe you might have a hyperactive clitoris that results in frequent orgasms with minimal stimulation. This is known as Persistant Genital Arousal Disorder. Have a look at this page on wikipedia.

https://en.m.wikipedia.org/wiki/Pers...ousal_disorder

While you may or may not follow thie disorder discribed to a T, you should consult a gynocologist to see if they can prescribe a course of treatment to help lesson the severity of your orgasms.