Bed rest can be a dreaded term for a mama-to-be, but it doesn't have to mean your life is totally on hold. The definition of bed rest isn't the same for every expectant mother, and the key is to ask your doctor about your specific limitations. They'll depend on the reason why you're on bed rest. Some bed rest can be very strict—the doctor may not even want you to sit up, let alone get up to grab a snack. For others, it may be safe to walk for short periods of time (like to the bathroom or kitchen) or to drive to a doctor's appointment. Make sure you ask your doc plenty of questions so you'll know which activities you can and can't do. It's a good idea to ask her if there's a particular position you should be lying in while you rest. Also important: not to cheat. Hang in there!