Ond mae prif weithredwr GIG Cymru, Dr Andrew Goodall, wedi pwysleisio bod gwasanaethau iechyd mewn argyfwng yn dal i fod ar agor ar gyfer pawb sydd angen gofal ar frys.
But chief executive of NHS Wales, Dr Andrew Goodall, has emphasised that emergency health services continue to be open for all those who need urgent care.