I'm 19 and not sexually active. I'm a virgin and I've never masturbated. But lately Ive been having these sharp pains at the end of my clitoris like someone is poking it with a needle or pinching it with fingernails. It starts as a tightness in my stomach and I feel it all the way down to the pinch. I recently had a Urine test done and everything came back normal. What could this be?