My mother has just been told that she has weeks to a few months to live. This is because of bone cancer that has spread to her other organs. 

What should I do as my next step to make sure that we get the palliative care start as soon as possible? Currently not in pain but is suffering sickness and diarrhoea. Should we contact the GP for drugs to stop the sickness and to make life more comfortable? Or would this typically be arranged by the specialist?

This is in Scotland. 

Thanks in advance.