Why my 6month baby keep yelling? What should I do? She looks ok, I tried to feed her but she's not hungry. Diaper ok too. She yell when she's excited and also fussy. Is it normal?

Awww she's just testing out her vocal chords! Babies are learning about their bodies and their surroundings all the time. Testing the limits of their voices to see the reactions they might get from others is very normal and part of their growing up process. Don't worry too much about it. If it's something important like being hungry or needing a diaper change, chances are she'll cry for it.

She is practising her vocal. At this age, she is trying to respond to a sound with a sound. She also will start uses 'ba ba' sound, trying to talk to you! Isn't that sweet?