Human beings were pretty much designed for sex. Our physical bodies, our emotions and our hormones are all geared for us to have sex, enjoy it and propagate the species. But what happens when baby making isn't easy? What happens to the enjoyment of sex? Does that make sex like ... work?

Angie Best-Boss, co-author of Budgeting for Infertility: Bringing Home Baby Without Breaking the Bank (Simon and Schuster, 2008), had difficulty conceiving her own two daughters. Best-Boss believes that sex can become a chore when a couple is having trouble conceiving. It's important to keep things in perspective.

"Keep a sense of humor, be gentle with each other and make an effort to connect emotionally before you connect physically, but be realistic," she says. "Baby-making sex just may not be that hot, but it can be tender. Keep one night a week off limits for baby or ovulation talk."

Dr. Lee R. Hickok, a reproductive endocrinologist for Pacific NW Fertility and IVF Specialists in Seattle, Wash., says that conception sex is less about the position a couple has sex in than what time of the cycle they have sex. "There is no information that suggests that one sexual position is any better than another," he says. "There may be some benefit to a woman lying on her back for 10 minutes or so after intercourse to facilitate the exposure of the sperm to the cervix."

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