Is that an orgasm?

Whats the difference between an orgasm by vaginal intercourse and one by cliteral stimulation? When i have sex with my boyfriend he says he sees a lot of "white stuff" coming out of my vagina. I dont know if that was my orgasm cause i dont really feel a "climax" it just feels good. Ive had cliteral stimulation orgasms and it doesnt feel lile that. So is the white stuff my orgasm or what????