I did hypnobirthing with second child - had a radically different birth experience with ds1 in comparison with dd (my first). Not sure whether was because was more aware of the process and what happens, and prepared for pain and had been to ante natal yoga too (cannot express how much I rate this).
The screaming was with third dc 
It was a precipitous labour, very fast and intense and didn't really have time to do anything but roll with it. :)