my DS never did this. DD (now 2.5) is doing it ALL THE BLOODY TIME. the high pitched shrieking. whats it all about? is it normal? is it an age thing? a second child thing? a girl thing? and more importantly how can i curtail it? i am ending every day with a headache and as i am pg dont really like to take anything for it. the house is far too noisy and i am far too stressed!