Recent research shows that a crying baby isn't really a problem—it may even be a sign that your little one is robustly normal! This is small comfort at 4 a.m., I know.  Here are some ideas to try, for a baby 3 weeks to 3 months of age, after you've changed the diapers and know she's not hungry, too hot or cold, or in need of medical attention to stop pain:

• Swaddle: Wrape your baby in a Miracle Blanket or regular blanket (have your doula show you how).
• Wear the baby on your chest in a Moby Wrap or sling, or hold him on the middle of your chest skin to skin. Use one hand to hold the head and the other to support the bottom of the child.
• Walk the baby with a swaying or lightly bouncing motion.  Sit on a large exercise ball and bounce with the baby (protect the head!).
• Tell the baby "shhhh," sing to the baby, or repeat softly, "oh, oh, oh."  Turn the faucet on so that she can hear water running.
• Let the baby suck on your clean finger or pacifier.
• Try bathing the baby in warm water; dim the lights.
• Use a baby swing (make sure the head is supported). OK to crank up the speed.
• Let the baby look at lights.
  
• Try vibration, for example the dryer (baby in infant carrier on top), driving in the car, leaning against the refridgerator, turning on vibrate on the bassinet. Don't leave baby alone in the car nor on the dryer.
  
• Use the football hold or other hold that puts the baby on her side or stomach. Once the baby is asleep, put her on her back (back to sleep).

Sometimes a combination of the above works and sometimes, even when you try all of these, the baby will continue to cry, so just keep walking with him.