“Very low,” says Goldstein, “because if they’re willing to get treated and they’re willing to do everything necessary, we can help almost every couple. Even men who are absolutely zero, in terms of no sperm in their semen, we can help the majority of them.”

In the end, it’s a numbers game: According to estimates, less than 1 percent of men are sterile, so the odds that you’ll be able to deliver the golden shot are strongly in your favor. Just relax, okay?