Hi Lorna....
Hmm not sure about the painkillers
but I imagine they should kick in quite quickly,
anti-b's take about 24-48 hrs to start working and yes
you are right , her cough may well be due to being
intubated during anaesthesia and should settle quickly
also.
Great big hugs for gorguss Gemma

and

for you for feeling sad when you shouldn't
really!