Keep your baby interested
While your baby grows up, her behavior changes as fast as she becomes more aware of her world. She is more interested in the objects around her and focuses her attention on new things that become attractive.
Sometimes your baby cries even when you have fed her and made all you can to comfort her, and there is not reason to be upset. You can make a funny noise, move your hands, sing a song, and it immediately will catch her attention making her forget she was annoyed. Taking her outside is also a good way to distract her.
Try to keep her entertained by changing the activities while she is awake.