I only have clitoral orgasms

Yes, so do the majority of women.  Clitoral orgasms are real female orgasms, but quite often, when women think that they are having a clitoral orgasm, they are actually having more of a vaginal one than they realise.

If clitoral stimulation usually sets the orgasm off, the vagina is always involved as well.  Wherever it starts (clitoris, breasts, vagina or other erogenous zones), orgasm always involves contractions of the vaginal and genital muscles.

So the vagina is actually involved in all orgasms.  Some sex experts think that all orgasms are in fact vaginal and refer to orgasms which start in the clitoris or start in the vagina, before involving the muscles in that area.