I am 29 male. Sometimes, I hold-onto orgasm for hours, I mean during sex for 3-4 hours. And continue to engage in sex. Now my question is: Does holding on to ejaculation and preventing orgasm for such a long time effect Kidneys in any way? Proving that, during this period I urinate also for few times. Because sometimes pain occurs in my back and i think it may be due to lying in one position for such a long time during sex. Thanks.