Ear thermometers are generally used in urgent care centers because they're quick, safe, and not at all uncomfortable. The only problem is that they're a little trickier to use than other digital thermometers. In fact, if you don't insert the ear thermometer exactly right, it can be hard to get an accurate, consistent reading.

If this method appeals to you, you might ask your baby's doctor to show you how to use an ear thermometer or practice following the directions on the package until you get a consistent result. While you're getting the hang of it, you may want to confirm your results with a rectal reading. Once you consistently hit the mark, you can rely on the ear thermometer.