I have a headache, sore throat with tender neck glands, 37 degrees temp, tight chest, aching body particularly in my lower back and fatigue?

Flu like illness: Without assessing in person, it is likely a flu like illness. Tonight please take regular panadol to control temp, fluids and rest. If you feeling worse tomorrow, then seek medical help to make sure you don't need antibiotics for strept throat infection (and throat swabs)

Sore throat : This could be viral or bacterial infection. You can try taking painkillers , and consult with a doctor either on smart health or with your GP .