"All of these conditions can be treated by your GP, and if you go to them early you can avoid getting sicker and ending up in hospital."
GPs and practice nurses can treat a range of health problems from stomach bugs, asthma attacks and chest infections to stitching cuts, treating ankle sprains and diagnosing rashes, she said.
"A quick call to Healthline can also save time and ensure you get the right care at the right place first time."
Healthline (0800 611 116) is operated 24 hours a day by registered nurses and provides free health advice.
An "on call" GP is also available overnight and can be contacted by calling a GP practice.
There is the Healthline symptom checker at http://www.healthline.com/ which has advice on when to see your GP, and also has a phone app and translator service.
Since July 1, children under 13 can go to their GP and local after hours clinics for free. Their prescriptions are also free.
Ms Stringer was urging people going to the hospital's Emergency Department to be patient while waiting to be seen.
"Even if there aren't many people in the waiting room, it doesn't mean we aren't busy," she said.
"Patients often arrive by ambulance at the side of the hospital and need urgent treatment.
"Our staff are committed to seeing people as soon as they can, however they operate on a 'who's worst is seen first' basis."
Ms Stringer said people should still call 111 for an ambulance if they have a medical emergency, such as trouble breathing or serious head and chest pain.