(msn) Sex is great until, well, it's not so great. When something goes awry, it's easy to blame being in a bad patch or a bad relationship. Or ... could your body be trying to tell you something? "There's an increasing awareness that sex isn't just about quality of life—sex can be a harbinger of underlying medical conditions," says urologist John Mulhall, director of the Sexual Medicine Program and the Sexual Medicine Research Laboratory at Weill Medical College of Cornell University in New York City. The following 10 sex scenes are no fun, but they're worth mentioning to your favorite primary doctor or urologist (the specialist who handles many men's plumbing issues). View source for the full list

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