When I started having sex, it was a while before I would let myself "go", it was so intense I actually was afraid. My lover had great patience, but finally he said just let it go and it was amazing...i shudder when I cum. I get vaginal orgasms but the4y are very rare, I can cum easily with clitoral stimulation, so as Lilith said try that, or try a vibrator, well lubed and lighty massaging her clit. But the most important thing in my opion, is to talk her through it telling her that she is ok...

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Susan