Herbenick echoes this sentiment, noting that stretching isn't a bad idea if you're injury-prone, and it may be wise to clear the area of pointy objects and keep lit candles a good distance from you. Also, "keep pets out of the room," she said, citing a recent study she conducted on the subject. Cats have been known to jump on the bed and "scratch at genitals" when they see their owners getting frisky.
And if something seems disconcertingly out of the ordinary, such as sudden, unexplained pain, do not hesitate to seek medical help, Slovis emphasized. "There's nothing to be embarrassed about. ER doctors see it all, and it's better than risking permanent injury or even your life."
Ideally, however, with a little common sense, and maybe a warm-up, your romantic evening will stay between you and your loved one -- no medical intervention required.