what spots do my orgasms release at (inside my vagina)

when i finger myself i feel the rush of my orgasm from deep inside my vagina-at the back.my ex boyfriend has a small penis and wed use toys for the most part and if i concentrate i can feel the throb of his ejaculation sometimes i can feel the warmness too. ive learned alot from having a man less endowed and i learned somethings about myself too.now i cant stop wondering if women only orgasm in that one spot of their vaginas?i mean now that i know about my 'ruffles'(patch of skin just inside vagina walls) is there a way i can make them orgasm so he can feel the rush of wetness?any other ways to stimulate my 'ruffles'