So many questions here it is difficult to sort out which is the chicken and which is the egg.Your baby seems to have ongoing reflux from this new description. She probably has stomach acid causing her intense discomfort when she is placed in certain positions especially on her tummy.She needs to be adequately treated for her reflux and at the very least should be on an acid reducer such as Losec or Nexiam plus,this is vey important, a medicine such as Motilium to stop the actual reflux.
Then she should not be so windy and colicky at her age and has rather frequent stools for an 8 month old baby. She probably has a milk or lactose intolerance. Try her on a lactose free formula such as NAN LF and see if she improves.
Many babies skip the rolling over milestone and as your baby sat so early there is no need for concern.
Your baby also shows another very common characteristic which is heat intolerance. Keep her in loose fitting baby clothes made of natural fibres and cover her only lightly when she sleeps.
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