My clitoris is always having a on and off pinching throbbing sinsation !?

Vulvodynia: This is generally called vulvodynia (pain in the vulva) which is way more common than people think. The pinching and throbbing are related to nerve changes. You should see a doctor that specializes in vulvar health. This may be a bit harder to find but ask around for the local vulvar clinic or call your local medical school. They may have or know someone.