Hywel Dda University Health Board says the number of people going to accident and emergency departments has increased at all of its hospitals this month, compared to last month.
It says some planned surgery has been postponed, so resources can be redeployed to A&E units, but it is working to ensure patients are not delayed in moving out of hospital and into more appropriate care.
More top news
Rain arriving in the West, with strong winds developing
After the warmest Halloween on record, it's all about to go rapidly downhill!
An artist has created a tribute portrait of late presenter Lynda Bellingham made entirely from beef Oxo cubes.