If your baby is like most at this age, he's showing signs of separation anxiety. Far from being a cause for concern, stranger anxiety is a sign of your baby's growing understanding of the world around him. Earlier, when you left the room, your baby was hardly phased. Now he knows that you're gone and he's able to picture you and miss you and may begin to cry as soon as you're out of his sight. Also, try to have a ritual of leaving that he can rely on each time you go and leave him with someone he's familiar with. That way, if he can't have Mom or Dad, at least he'll feel happy with his temporary caretaker. Note: Even if your baby has been sleeping soundly through the night, he may now wake up periodically if he's experiencing separation anxiety — the two seem to be connected.
Just when the days of colic and ceaseless crying seemed to be behind you; when your baby was maybe, just maybe, sleeping through the night; when she was starting to settle into a regular routine…here comes the tooth fairy to throw you both for a loop
Teething can start as early as 3 months or as late as 12 months, but most babies sprout their first white caps (typically the two middle teeth on the bottom) between 4 and 7 months of age. Don't be alarmed if your baby has gaps between his pearly whites. Teeth often come up through the gums at odd angles, and spaces commonly disappear by age 3, after all 20 baby teeth have broken through. Once your baby starts teething, you can expect more drooling and experimenting with sounds as he adjusts to having these strange new things in his mouth. To ease your baby's discomfort, give him something to chew on, such as a firm rubber teething ring or a cold washcloth. He may also get some relief from eating cold foods such as applesauce or yogurt (if he's eating solids) as the cold may temporarily numb the pain. Giving a baby a hard, unsweetened teething cracker to gnaw on is another time-honored trick. You can also try rubbing your finger over his sore gums or applying an oral pain relief gel.