I’ve just googled & found this which I’m not sure does fit Baby E i need to go back & look -
NEC can be difficult for doctors to diagnose. But there are signs that a baby can show if they are becoming unwell with NEC. Doctors are likely to identify these signs in your baby on the neonatal unit.
Signs of NEC in your baby can include general signs of being unwell or fighting an infection, such as:
a fast heart rate
low blood pressure
irregular, fast, or slow and shallow breathing
a high, low or quickly changing temperature.
In some cases, more specific signs may develop, which may include:
not feeding as usual
blood in their stools (poo)
a painful, swollen or discoloured tummy
being sick (vomiting), especially if they are vomiting green liquid (bile)
having a large volume of green fluid, or blood coming back up your baby’s NG tube (if they are being fed by a tube).
If doctors think that your baby may have NEC, they will perform X-rays and blood tests. However, it can be hard to know if these signs are caused by NEC or other conditions.