Try some indirect stimulation of the genitals, like rubbing the general area instead of directly touching the clitoris.
“The number one thing I hear women complain about is that after one orgasm, their clitoris gets too sensitive for any more stimulation,” Solot says.”
“There's a simple solution to that one: Many women are surprised to find that if they give their clitoris a short break after the first orgasm – say, ten or twenty seconds or a minute – and then start the stimulation again, the period of hypersensitivity passes quickly. Then they can keep going and have another orgasm."
Depending on the type of stimulation you like, a sex toy can come in handy here.
Experiment with what feels good.
Whatever you do, don’t let your arousal fall off completely, because you will enter the resolution phase of the sexual response cycle, which is what prevents men from having multiple orgasms.
Coming Together?
Why are women multi-orgasmic while men are one-shot wonders?
Blame it on Mother Nature.
The female sexual response cycle is incredibly fluid. A woman can go from arousal to orgasm and back again with many stops in between.
A man generally goes from low arousal to high arousal to orgasm and then has a refractory period in which he physically can’t orgasm again for hours or, sometimes, days.