Yeah, actually, this is about the age they start to test their limits, and their vocal cords! Especially if you're just sitting on the couch and she looks at you and howls. Also, its about time for one of the many "can't be more than 3 feet away from mommy" phases that she will go through. If she doesn't seem to be showing symptoms of getting a cold or anything, its most likely just teething or trying to get attention or both. When it comes to bedtime, its time to let her cry and learn its bedtime. If it lasts more than 15 minutes, go in and lay her back down if she's up, and rub her back. Tell her you love her and its time for bed. Then if it still continues, wait a little longer to see if it stops, but do not pick her up. This is the test: "If I scream my head off, does mommy do what I want?" Meaning if she doesn't want to go to bed, do you let her make the decision or you? This includes naptime. If you let her nap and put her to bed around close to the same time everyday it'll be really easy for her to adapt to the schedule on her own and should get used to it within a few days. It hurts for sure in the beginning, but stay firm so she will know to respect mommy. The crying should go away unless, like i said, she has something medically wrong with her. :)