10 Surprising Fertility Facts We Bet You Didn't Know

Sure, you may know your stuff when it comes to temping and taking your prenatals, but trust us, there's a lot more to understanding your fertility than that.

1. You're most fertile before you ovulate. Believe it or not, in addition to the day you actually ovulate, you're most likely to get pregnant if you have sex in the five days or so before. Here's why: Once the egg leaves your ovary, your guy's sperm has about 12 to 24 hours to get to it for conception to happen. But sperm can actually remain viable inside you for several days or even weeks after you two actually get it on. So to put it bluntly, the more swimmers you've got in there ahead of time, the higher your odds are of making a baby.
2. Tight shorts are a sperm's worst enemy. When the scrotum's cooped up in clothing that's too tight, even a one-degree increase in body temp can reduce sperm production. Which means if your guy chronically sports short shorts or tightie whities, you officially have a good reason to tell him it's time to ditch them. Make sure his boys are at a cool 94- to 96-degree Fahrenheit temp and always in loose clothing.
3. Your sense of smell skyrockets when you're ovulating. Yup, you read that right. If you've been smelling funny things all day, it could mean it's prime baby-making time. So instead of complaining about his overwhelming BO after he hits the gym, maybe take it as a cue to roll around in the sack — pronto. (Okay, after he showers.)

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